I feel sad that school starting soon and that I don’t have a boyfriend?

I just feel super lonely. About 2 weeks ago I saw the guy I was on and off with for over a year at the club with another girl holding her hand etc… he told me that he didn’t want to see me cuz it would be too hard for him because he’s leaving to school and vacation but the whole time he was just with another girl and talking to me. This broke my heart because it makes me feel like there something wrong with me. I just feel not lovable and I can’t find anyone that I’d see myself dating. I just get scared that I’m going to be alone forever. I’m 20 and i just confused I don’t want to start school again and I just feel stuck and don’t know what to do.
I feel sad that school starting soon and that I don’t have a boyfriend?
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