My boyfriend left me (and I'm not taking it well)

So, for context, me and my boyfriend met June 11th 2024, started dating July 4th, and then he broke up with me December 27th (worst Christmas gift ever). The relationship only lasted 5 months and dispite about a month and a half of copium, I just can't get over it and subconsciously thinking it was my fault we broke up. He constantly said that it was his fault, my friends think I should move on, my family wants better for me, but I still love him. There isn't a day that goes by without me thinking I could've done more.

This has been negatively effecting my studies, my social life, my job, my mental health, and I just want these bad thoughts to end. It's already bad enough that I see love all around me; my mom is getting remarried soon, she managed to hold a relationship with 2 self destructive bipolar douchebags, yet I couldn't even hold a single relationship with a drug addict.

I wanna seek therapy, but I don't wanna burden anyone with my bs, nor do I think it'll even help me in the long run. I'm hoping that getting this out in the world will be semi-constructive (because this is the one social media account I don't really use). Kinda like writing on paper and throwing it out? Idk, but thanks for reading.