@Brisas333,
There are other threads that might be of help. There's one about being the other woman.
A2K is not the best place to navigate, people tag their own topics, and they're not always helpful, but there are plenty of threads out there.
Btw, I've met a lot of blokes who claim to be unappreciated then boast about their sexual exploits to their mates. I once worked with a bloke we nicknamed 'Humper' because he was always out shagging and then telling anyone who'd listen all about it.
He was very good at bullshitting, most people who cheat are.
You're hurting because you've just gone through a breakup, and the last thing you want is people judging you. So take a bit of time for yourself anyway, accept it's over, and was never really going to go anywhere, and try to move on.