Assumptions

I broke up with my bf last week because he kept assuming I was cheating on him and we were only dating for 3 months ..He also made a big deal about me going to vacation with my parents. When I went to New Jersey a couple weeks ago he kept assuming that I did something while I was with my parents which made my parents feel very disrespected. It made me feel little about myself and lowered my self esteem..but idk now that it's over I feel incomplete without him I feel empty inside and like I made a mistake wen deep down inside I didn't . I also get anxiety and I cnt sleep at night.