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Mumsnet has not checked the qualifications of anyone posting here. If you need help urgently or expert advice, please see our domestic violence webguide and/or relationships webguide. Many Mumsnetters experiencing domestic abuse have found this thread helpful: Listen up, everybody

Pregnant and discovered he has another relationship, should I tell her?

28 replies

BrightBlueQuail · 18/04/2026 14:12

Pregnant almost 8 month 35 f and found out the man am with 41m is in whole relationship from pic i seen on the women post probably around in her 40s. She post how his a good man and is there for her and her kids. And i no longer want to have anything to do with this man the betrayal is too much.
Please anyone who been in situation has any advise?
Do i say something her know he has a baby on the way or not?
What should be my next move?
Ps. I ask him he in relashionship he competly denied it with pic proof.

OP posts:
Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

TFImBackIn · 18/04/2026 16:21

It's not that she wants to ruin the other woman's life, it's making sure she knows what sort of man she's dealing with.

BreakingBroken · 18/04/2026 16:25

She’ll find out at one point or another if OP, puts in a financial claim.
If he’s prone to sex out of wedlock his wife may want an STI check.

PhuckTrump · 18/04/2026 20:48

I would want to know if my partner had a baby on the way with another woman.

Cantbloodyrememberthenameonthread · 18/04/2026 21:05

Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

What? Are you actually joking?

a) he has ruined hers by getting her pregnant under false pretences and now she’s stuck with a lying cheater in some capacity for the rest of her life

b) it’s not about spite, the woman has a right to know her husband is about to have a whole other child. Financially legally and emotionally. OP isn’t ruining her life, her husband is.

yes you should tell her of course you should

Moonlightfrog · 18/04/2026 21:09

PhuckTrump · 18/04/2026 20:48

I would want to know if my partner had a baby on the way with another woman.

This. I would want to know. As a female I think we should look out for each other, she should know she’s being cheated on and that he is about to have a child.

MissMoneyFairy · 18/04/2026 21:12

How did you find the pictures of this woman

SisterThorn · 18/04/2026 21:13

Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

You think op would be the one ruining the other woman's life? Yeah right. Not the poor hard done by man eh

ToKittyornottoKitty · 18/04/2026 21:14

Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

Struggling to see how it would ruin her life, he’s literally having a baby with someone else, her life is already in the shit she just doesn’t know it yet.

Anonanonanonagain · 18/04/2026 21:17

OP you have to let her know. From experience with one of my friends who was in the very same situation years ago and she did not tell the other woman it eventually came out and made her look like she was in the know about his other relationship and it worked out dreadfully for her keeping that secret. It nearly destroyed the other woman when she eventually found out about the baby too. You need to let her know, if he has kids with her they will be your childs siblings. Loads of consequences down the line. I am sorry he has put you in this situation but she needs to know.

LouiseMadetheBestBroccoliPasta · 18/04/2026 21:35

Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

This is either a cheater themself or someone with internalised misogyny. Repulsive.

BrightBlueQuail · 19/04/2026 14:28

They are not married nor have kids togther.
We are in relationship so this somthing hes having on the side relationship. So i did find pic looking thru instagram bc i knw something was wrong.

OP posts:
Beenwhereyouareagain · 20/04/2026 17:11

Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

???

Goonie1 · 20/04/2026 17:29

BrightBlueQuail · 19/04/2026 14:28

They are not married nor have kids togther.
We are in relationship so this somthing hes having on the side relationship. So i did find pic looking thru instagram bc i knw something was wrong.

Sounds like you think your relationship is the “main” relationship and she’s the side chick. He may well have played her to believe she is the main relationship too meaning at the point she finds out, thinks you’re the side chick.

Im sorry you’re in this situation. Be warned he will tell you anything to squirm his way out of this.

I would want to know if I was the other woman. You would not ruin her life, he would and that’s on him 100%….or she would count herself as having a lucky escape.

Unforgettablefire · 20/04/2026 18:07

I think you should tell her I’d want to know, are you not glad you’ve found out?
What if she ends up pregnant to this man? It might be you who’s the bit on the side not her and you should do both yourself and her a favour by getting rid and letting her know what he’s up to. You’re allowing him to shit on people if you keep quiet.

millymollymoomoo · 20/04/2026 18:24

You may be his bit on the side

Honestly if it’s true he has someone, you need to just concentrate on yourself and baby and work out from
there. You’ll have to think how you co parent, what access looks like, what money you’ll have etc as well as having a newborn.
id focus on that

WerewolfOfLoudon · 20/04/2026 18:26

BrightBlueQuail · 19/04/2026 14:28

They are not married nor have kids togther.
We are in relationship so this somthing hes having on the side relationship. So i did find pic looking thru instagram bc i knw something was wrong.

You are the side relationship.

HeadDeskHeadDesk · 20/04/2026 18:30

How long have you been with this man? How long had you known him before you got pregnant? I'm guessing it was not a jointly planned pregnancy and you don't live together?

HeadDeskHeadDesk · 20/04/2026 18:33

BrightBlueQuail · 19/04/2026 14:28

They are not married nor have kids togther.
We are in relationship so this somthing hes having on the side relationship. So i did find pic looking thru instagram bc i knw something was wrong.

If you are the main relationship and she is the side relationship then I'd be amazed if you were able to find photos that give you proof of his infidelity by simply searching through instagram. For a start, you'd have to know her identity in order to look at her instagram in the first place. I can't imagine she's tagging him on insta and he's allowing that if she is just a casual affair partner.

Holtome · 20/04/2026 18:34

I'm afraid you are probably the side relationship. It woukd be spectacularly stupid to be allowing pictures of your affairs on Insta. That said, sometimes they are and sometimes they don't care. None of it's good.

Why do you want to tell her? If it's to "win" him you'll be wasting your time.

If it's so she can make sure she looks after herself, of course you should.

BeeHive909 · 20/04/2026 18:35

If he’s posting pictures of her on social media then you’re the side piece not her. But yes she deserves to know so she can dump him.

Calliopespa · 20/04/2026 18:37

Yes of course: why would you cover for him?

But it is the end of the road for you too OP. I'm afraid it is more likely you are the extra party here.

Be strong for your little one. You will look back and be pleased you discovered this before the baby arrived.

ToKittyornottoKitty · 20/04/2026 18:41

BrightBlueQuail · 19/04/2026 14:28

They are not married nor have kids togther.
We are in relationship so this somthing hes having on the side relationship. So i did find pic looking thru instagram bc i knw something was wrong.

You have no idea if shes the ‘side’ woman or if you are though. He’s clearly in a relationship with both of you

GinaandGin · 20/04/2026 19:04

Nantescalling · 18/04/2026 16:19

Why would you want to ruin her life just because he's ruined yours?

Because she needs to know
He is making a fool of her

GinaandGin · 20/04/2026 19:07

LouiseMadetheBestBroccoliPasta · 18/04/2026 21:35

This is either a cheater themself or someone with internalised misogyny. Repulsive.

Absolutely
Agree 100
OP hasn't "ruined" her life
He has
Why are we protecting men for their shitty behaviour
Why are we still blaming women

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