I am 90% sure my friend's DD is not her DH's

[SpaceOP]

I have a good friend who I've known for a long time. I love her and consider her a very close friend, but she's also someone who seems all super open on the surface but there's all kinds of stuff going on below.

I have long had my suspicions about her DD. Since she was really very small, I kept being struck by how much she looks like a friend of ours. My friend and her DH are very close to this man, and have been for as long as I've known them. Recently, the man posted a picture of HIS DD who is about 5 years older than my friend's DD and I almost dropped my phone in shock. I showed DH and when looking at the picture, after a few seconds he said, "is that friend's DD from a few years ago?"

I think it's entirely possible she had an affair. I think it's possible her DH knows and has forgiven her EXCEPT that he is still very close with this man which seems odd. So my new theory is that for whatever reason, they asked him to donate sperm.

Obviously, if she wanted me to know, she'd have told me and I'm certainly not going to ask her. Ditto, I would never ever say anything to any mutual friends or even just anyone in real life in case they ever met her/her DH. So I came on here!

Any other ideas on how this might have happened? Affair (known or not) and sperm donation are my main ones. I guess it's possible they used to do threesomes back in the day too (the other man was single until a few years ago but is very attractive).

Like others have said, it's obviously not your business but I get how you find it interesting.

It could be any number of things, sperm donation, an affair, a threesome, a pure coincidence, who knows 🤷‍♀️

Sorry to repeat but it’s none of your business

If DF wanted you to know her business she would have told you.

Keep your nose out

Could the guy be a half brother to one of them? That could explain the similarities to both him and his daughter?

I am not sure what the previous comments are about. The OP has said she isn't going to mention this to other ppl, but now she has noticed its only natural to wonder.
I would say the obvious and most likely scenario is an affair. Whilst the others are possible they are also more remote.
I would suggest forgetting about this altogether now though, as you dont want it to come out in a drunken or angry outburst.

Good grief!!! How on earth are you a friend? Posting personal stuff about your friend online is foul, keep your nose out as your gossiping will get you into trouble

Trunky want a bun?

You’re not going to say anything in RL so you came on here!!

Why? You don’t really need any advice or information here. You just fancy a good gossip about your friend.

Get a hobby ffs.

Mind your own bloody business.

Perhaps it's your friend's DH who is father to both girls.

Find something else to think about as a matter of urgency

How would having this knowledge enrich your life? You sound like a curtain twitching busybody and I suggest you take up crochet, knitting, cross-stitch, tapestry, painting, gardening, pottery, learning a new language - anything to stop you obsessing over something that is nothing to do with you.

What a peculiar post. To speculate on the paternity of a child of a friend of yours in front of strangers on the internet. Mumsnet gets odder and, in some places, more like Take a Break, by the week.

I don't think the OP said anything about sleuthing/getting involved. I also think an anonymous thread is better than gossiping with a bunch of friends.

I would find this intriguing as well. It's normal to be curious although on MN that makes you a busy body.

I read a statistic once about how many men were raising children that weren't actually biologically theirs. Can't remember the figure but it was higher than I would have thought.

Bloody hell. that's an awful lot of assumptions made about someone!
Threesomes? Affairs? Sperm donation?!
WTF lol, this is your friend? You don't sound like much of one.
Absolutely nothing to do with you!
Oh, and totally with the poster who said step away from the Take A Break!

Why would you want to make it your business?

@Farlow

You’re not really her friend are you.

Don't be silly. Suspecting something about your friend doesn't mean you are a bad friend.

I have a friend who got into a relationship with a man in a dubious way a few years ago. She was his lodger, not paying much rent, knew he found he attractive and bam about a month later they are an item. I have suspected that they had an agreement and it's natural for me to think about it BUT will I ever ask her that? NO. Am I still a good friend? YES.

FFS.

Do you have nothing better to do, OP? if you want drama, I reckon Netflix would be a better idea than inventing 'theories' about real people and posting about them on a public forum where they might recognise thmselves.

Do nothing. I think my friend's youngest sibling is actually is full sibling even though his mother was married to somebody else after his father. It is kind of obvious but he doesnt see it. I will do nothing and say nothing

My guess would be fertility issues so they agreed to go at it with the turkey baster. It’s probably much more dull and straight forward than you are imagining

It isn’t your business really

I can't see what possible good would come of you knowing. Best to consign it to one of life's mysteries.

Could she have borrowed his toothbrush? Or maybe sat in the chair he normally sits in when they were visiting one day?
Maybe he just looked at her in that way that Ryab Gosling sometimes looks at me - Im pretty sure that got me pregnant once.