Guys i just need help with this

so two weeks ago this Saturday my boyfriend of 7 months broke up with me. That may not seem long to some but to me it was 7 months of memories , getting to know this person, getting attached (I get attached fast which honestly kinda sucks). A couple months ago he "lost feelings" for reasons he doesn't know but I've come up with my own cuz I feel like it was all me as to why he lost feelings he says it's not but I just feel as if it is. Anyways I need tips on how to help me move on all I do is think about him as soon as I wake up all I do is think about him if someone asks me about him or.if were still together I say no but then burst into tears. I don't want to feel any of this anymore. Any tips that will.help me start to move on will.be great