Why do… why does this happen?

A few years ago I had an ex that came back into my life, literally wrote me a love letter and left flowers and so I called him because it was really sweet. He told me he was sorry, he wanted to get back with me to try again and missed me.

So I’m obviously still Inlove (cried that out of my system quick later) with him and I’m like hmmm okay. And our relationship ended because we just weren’t compatible, we didn’t see things the same. It wasn’t because of cheating or anything like that.

So I spent 2 days with him, we had sex almost the entire time. The second night after he passes out his phone rings at 2am and it’s a girl? And I’m like who are you? She tells me “I’m his girlfriend!” So I wake him up and I’m like “WAKE UP IDIOT! you came over here to get back with me and didn’t even bother to tell your girlfriend! How rude!”

While she is still on the phone, ON SPEAKER, he says “she’s not even my girlfriend.” And she is crying “yes I ammmmm! We just made it official last week!”

And I said “he’s been with me for 2 days he said he wanted me back I didn’t know about you.” And she’s sobbing, like uncontrollably and he is continuing to LIE in my face where SHE can hear him! “She’s not my girlfriend she’s just some girl that’s obsessed with me.” And I tell her “you hear him lying? Get it together because he’s gonna come lie to you about me too. We have been having sex and making up for two days. He wrote a love note and everything. Didn’t say anything about another girlfriend.”

“How many are you trying to have, dude? Get out of my house.”

She tells me… “you’re gonna ruin him!” I… I don’t even know what the heck that meant and started laughing. This whole situation was too much and that was the icing on the cake and I legit did not know what she meant. Like if anything I just ruined his mood by answering his gfs phone call. He’s the one hurting people.

He grabs the phone and hangs it up and I’m like get. The. Fuck. Out. This is shit that happens in movies, this is so gross. Get out of my house now. Do not contact me again. There were people calling me and him as I’m kicking him out of my house, “how could you do this to that girl? She’s a nice girl?” And I’m just getting MORE mad and telling people “HE DIDNT BOTHER MENTIONING HER.” It was a huge ordeal I guess. People thought I knew about her.

They are together now still, he lives with her and constantly cheats on her with my cousins ex girlfriend infront of people. Hooks up with people in bars. People KNOW about it, people TELL her and she’s just okay with it. Or I guess more so just puts up with it and is constantly gas lit.

I also get told he talks constant shit on me which is why it’s on my mind.

I have no idea how you stay with someone that you know is cheating on you, that you actually caught cheating. It’s like he’s getting a free pass to be a giant piece of shit. He recently made a pass at me even though he apparently never stops talking shit about me and even though have a boyfriend and I told him he probably needs to see a doctor because my cousins ex girlfriend is gross and he got mad and walked off.