Backstory
I have a friend (A) who I am fairly closewith. A got with her boyfriend (B) about 3 years ago, I always thought he was a bit of a bellend but couldn't put my finger on why.A is also currently 7 months pregnant.
2 Weeks ago
I was leaving my house at about 8.30am, and I see my neighbour kissing a man goodbye at the door and as he starts walking away, we lock eyes. It's B! His face drops, and he looks like he's going to pass out. He quickly rushes past me and turns off the street. I casually asked the neighbour
"Aww is that your new fella?"
She smiles and said "sort of. Just keeping it quiet at the moment though and see where we go."
I phone DH and tell him exactly what I saw and how I always thought he was a dodgy bastard. He must be thick to be shagging a bird who lives on the same street of As friend - he's even been to our bloody house!
DH tries to be the voice of reason, that maybe I got the wrong end of the stick, he surely wouldn't cheat on A. If I go running to A with this information and it is something fairly innocent I would look a twat and stress out a pregnant woman and I can't be getting stressed out being pregnant myself.
That night, guess who knocks on? The neighbour! B had obviously filled her in that he knows me and I'm his girlfriend's friend. Turns out my neighbour knew she was screwing a taken man, and had fell for the bullshit cliche of "I will leave her just need to find the right time"
I asked her did she know he has a heavily pregnant partner at home, she said yes but she has no guilt because B said the child was never planned A basically forced him into the baby, and it's only because of the baby why he hasn't left yet.
I asked her why on earth she would be telling me this, surely she should be trying to play it down and minimise it. Turns out the snakey cow wanted me to give A all the gorey details in the hopes she kicks B out so the neighbour can finally have him!
Me and DH discussed this at length and decided to not saying anything, as I honestly didn't want to stress her out and as people always say stay out of it.
Today
(Saw the twat leaving again yesterday morning) A has come into my salon for a catchup, and she's saying how B has been amazing throughout the pregnancy, how excited he is and they're even discussing marriage. She's in the salon for about 40 minutes before cockhead comes in.
He struts in cocky as hell, and makes the comment "people are gonna think you're following me soon"
A asks what he means, and he mentions how he saw me yesterday leaving a customers house! A just looked really confused at me and went "you never said you saw B yesterday KungFu"
I played it off as baby brain and why I didn't mention it. But never in my life have I felt the urge to inflict so much damage on someone as I did that moment in time.
He's got me over a barrel now hasn't he? I can't say anything because of how long I've left it and he would easily bullshit saying it's a customer (he's a tradesman). The only way I could prove I was telling the truth is letting A meet up with the neighbour, but A honestly doesn't deserve that does she?
Please don't tell me I should have told her 2 weeks ago, I thought I was doing the right thing but in reality I was being cowardly. Any advice would be much appreciated.