Today's my birthday and I found out my boyfriend has been cheating on me

Probably the whole time we've been official, four months and two weeks or so. After the first couple weeks spending a lot of time together he (36m) started acting different and wasn't texting as much and his availability became inconsistent and I (32f) questioned him and he made me believe I was being clingy and codependent so I read self help books on attachment and codependency. I accidentally found out he was bi and I let him know I knew and assured him I didn't care and my only request was to not cheat on me with a guy or a girl. That's a common rule to romantic relationships ya know.

The gut feeling and all the signs were there but I just didn't see it until I got a look at his phone.

Went through his phone last night because of my gut feelings and there it all was. He was visiting hookers and all kinds of shit when all he had to do was let me come stay the night because I'm a HLF. Why would a man pay 250 for a hooker when he has an attractive freaky girlfriend? I just don't understand men..he seemed like the most normal of the men I've dated. I really fell in love with him.

I confronted him and he said he used a fake texting app to fake these messages to catch me looking in his phone. I call bullshit. I'm completely done with dating. Here comes the tears, let's go heartache!!