An Anxiety Nightmare

Hello, I joined this group like 10 minutes ago so I don’t know what I’m doing. I’m just going to share some of my struggles in hope for some advice or people who can relate…… I got into a serious relationship freshman year of high school and that relationship lasted a little over a year and after we broke up I noticed I wasn’t ok being by myself…… I needed to find a boyfriend, not having a boyfriend made me anxious. I got anxious attachment style over any boy I dated and our relationships ended ubruptly because of my self sabotaging behavior even tho it was the opposite of what I wanted to do. Present day: im dating this guy we’ve been dating a little longer then what my Average relationship lasts I need advise on how I won’t be so scared all the time that he’s gunna leave me. Im sick of living in anxiety and fear.