Am I unlovable? Do I need love?

I am 20 years old and in the prime of my life. Women tell me I'm charming, funny, smart, creative, hard-working, kind, talented, and attractive. But recently, my own dad told me that he doesn't love me and I was nothing more than an investment to him. Looking back, I realize that many of my past relationships ended abruptly because the women I was with told me that they just didn't love me. It didn't matter if I was dating girls that were out of my league, or dating girls that I liked for their personalities. It didn't matter how much fun we have, or what I do for them. It always ends the same. I don't try to be perfect, but I'm not lazy with my relationships either. I'm not a needy goodie-goodie, but I don't try to be a dick to people either. (And I'm usually not as cocky as this post is making me sound) I am only 5'7". Is that why? But then again, one of the tens I dated in highschool is now married to a short plumber. The other is dating some unattractive no-name artist. I just don't understand love. Is there something about me that is fundamentally unlovable? Do I even need love?