Just found out my friend slept with my boyfriend

[aesoplover]

Sorry for the dramatic title - it's not actually as bad as it sounds but I couldn't fit the details into the title and I need to vent this.

Found out this evening that over 25 years ago when I was with who I would class as my first love, a very good friend of mine was sleeping with him. We were all teenagers and I do not give an eff about him now but I am upset that a friend would do this to me especially as I am still friends with her today!

I only got vague details from a mutual friend and I didn't want to push things as I could tell she felt awkward and that she shouldn't have said anything/thought I already knew.

I guess I'm not looking for any advice, I just needed to get this off my chest as I now can't stop thinking about it 😠

I'd find this difficult too.
Yes, it was a long time ago, but if you've only just found out the betrayal will feel recent. I'd maybe feel like the friendship was built on a lie for 25 years, because the chances are we wouldn't have stayed friends if I'd known at the time. But I'd also maybe try and get over that if the friendship has been one I value for more than two decades!
Only you know if you should be glad that you didn't know and throw it away at the time. Nobody is the same person that they were 25 years ago. I would hate for someone I met know to judge me on what I was like back then!

I agree with previous poster but then again a leopard doesn't change its spots. I'd be worried she could backstab me again. U wouldn't be able to trust her.

We all made daft mistakes as teenagers, some we regret, and you are both different people 25 years on.

Let it go.

Why would mutual friend be shit stirring all these years later?

I would be more concerned why a ' mutual ' friend was telling me now.

I've known for years that she had slept with him but I thought it was years after we'd broken up. Friend mentioned this evening that there was an "overlap".

I think she's possibly mentioned this because earlier I had been talking about how I don't like the feeling of everyone knowing something that I don't.

I have sympathy with you on this . Years ago I had a boyfriend and we worked in the same place . My supervisor was about 15 years older and a single mum. My boyfriend and I would go around hers a couple of times a week to keep her company once her child was in bed. Unknowns to me , he'd walk me home but then go back to hers and they would sleep together .
The trust was broken to both of them , I finished with him and got a better job and left .

Yes I just feel that I'm looking back on everything in a different light now and questioning what was going on and when.