Lost in love

I really just don't understand. I'm a college senior this year looking for love but I just don't think I'm going to find it. I've had one boyfriend in my entire life, which started my freshman year in college. We were together for a minute and everything was just fine. Suddenly, after he graduated we were still together. I would drive to see him every weekend and then suddenly, stuff started going left. We broke up. I was devastated. I've been looking for love since and I just can't find it. Today, guys are only interested in sex (not all but most), and I just don't understand. Sometimes I think I'm the problem. A little too aggressive and not submissive? I'm really lost