You could just leave him, see what unfolds, you don't need an excuse he's your boyfriend not your husband
My ex ex fiance was having an affair with at the time one of my best friends. I noticed his attitude towards me had changed, I noticed he'd be suddenly going to work doing odd jobs, he'd always be on his phone smiling as it buzzed with messages , he'd cheated many times before and I stayed with him. I looked through his phone as I had. Feeling he was and found out it was with My friend I kept quiet pretended I didn't know.she then invited us for dinner at her house, we went. We had a few drinks, she cooked. She had a newborn baby and her husband was in the raf. When her baby cried I said oh I'll see to her and went upstairs I got baby back to sleep pretty fast and slowly crept back down the stairs to peek on them, I saw her sat on him kissing him and they were getting really excited. I then appeared and they quickly seperated. We continued the night then she announced she needed the loo and I said me too, I went with her she sat on look I locked the door behind us and stood up against it
I looked her in the eyes and said so would you like to explain to me what made you decide to throw our friendship down the drain after everything
She replied the usual what you talking about what are you okay No I'm not and you know why I'm not, don't treat me like a f* idiot I know what you two are doing and I've known for months but here we are
She was so shocked, I didn't let her leave that room, I could of smashed her face in
But I didn't
I turned my rage onto my so called partner
We left the bathroom xwe went back to him and she told him I knew.
He then went crazy he'd be found out absolutely nuts, he started swearing and throwing things
I don't remember everything fully but enough
make a fake instagram account ? or have a friend do it