aqua male reaction to karma

Karma may not be the proper word but I caught my xb in a lie last month. We were talking and he mentioned seeing his ex grlfrnd. But it was when we were togethr. I became angry and very hurt. I asked if he had relations with her and he said no. But if he lied Abt seeing her y not lie Abt everythng. I told him pls b honest as we had unprotected sex. Still nothing. I ended up emailing her and asked her woman to woman to pls be straight with me. I would want to know if I were her anyway. There was nothing malicious in the email at all.
Well I think she opened it cuz my ex just blew up on me saying don't call him, talk to him, etc. But not y.
I'm guessing he was running game on both of us and got caught.
My question is if u get caught in that type of situation, do u calm down after u realize u did it to yourself? Or might he continue to deny it? What do I have to look forward to here cuz he lives in same building as me.

It could go two different ways.

1. He could be pissed because he got caught.
2. He could be pissed because he answered you truthfully and you didn't trust him and went behind his back.

Hard to say without knowing more information.

—??

I think he didn't answer truthfully at first. I had him cornered because his story didn't add up. As far as sleeping with her I don't know. But I think if his meeting with her was all innocent then he wouldn't have blown up. But I'm just speculating right now.
What else do u need me to tell u to get a better perspective?