Was I wrong and what would you do in my shoes? I’m getting tired of this happening every couple of months.

Edit**** Kinda glad I posted this now. I was beyond upset and kinda ready to shut down but now that I’ve read all of y’alls comments it’s made me feel A LOT better. I’ve been growing up with this my entire life but whenever I got with my fiancé it made things 100 times worse. She liked him for the first 3 months then it just went all down hill because of weed. I’ve never really been able to be close to my mom but always wanted that mother daughter relationship. I guess I’ll never get it but that’s okay as long as I dont end up being like this. Thank you all for reassuring me that I’m not doing anything wrong. I appreciate you all.