My (23F) fiancé (31M) cheated on me with one of my best friends (23F) and now she’s pregnant

I guess I’m just not ready to tell my friends or family yet and needed somewhere to vent.

I already know what I’m going to do, I’m going to throw his shit out of our apartment and never speak to either of them again.

I’m 23F and my EXfiance is 31M. We were supposed to get married next month but he’s a lying cheating piece of shit who slept with my best friend when I was away and she was supposed to be feeding my cats (fiancé and I live together but he’s a fireman so he’s gone for a few days at a time). Tonight she told me she’s pregnant and he doesn’t want anything to do with her or the baby.

That’s the only reason she’s telling me, she’s throwing him under the bus bc he’s telling her to get an abortion.

He’s at work now saying it was a one time thing, he was dumb, don’t let this ruin our relationship....then once I made it clear he’s not talking his way out of this one he got really mad and started blaming ME, saying it’s because I don’t “take care of him”.

Like EXCUSE ME?!? I’ve done so much shit for him and put up with so much. Let’s see what other girl will put up with his shit, he thinks because he’s fit and has a lot of tattoos he's allowed to treat spoken like shit. I should’ve walked out on him when he took my phone and threw it against a wall because some guy from college texted me (I didn’t even respond!!) or when he told me if I didn’t hook up with a girl in front of him it would mean “I didn’t really love him”.

I bet his captain at the firehouse would love to know about how he yanked me by my hair to get back into his car when we were fighting or how he shoved me into our bedroom door and then said it was my fault because “I made him so angry.”

Anyway writing this all out has made me realize I really dodged a bullet.

I’ll take any advice on how to tell my mom that the wedding is off though.

Advice:

Be honest with her: "Mom, I know you were looking forward to the wedding, but X is a cheating douchebag who got Friend pregnant while I was out of town and it woke me up to what a terrible person he is in general, so I won't be marrying him, nor will I be speaking with Friend ever again."

Your mom might be upset at first, but she will appreciate your honesty in the long run.