Getting It All Out.

I am 17 years old, and in just the last few months realized that I am a lesbian. For the past 3 years I was saying I was bi, but over time guys have just become uninteresting for me.
I have told my father that I was bi, he didn't take it so well.. He tried forcing me to date guys. It never worked out. . . Now I am stuck, I cannot tell him that I am a lesbian because he will accuse me of saying that only because I "am too fat and ugly to get guys to like me, so I am hoping girls will be different." A quote from him when I told him I was bi... But yeah.
I suppose what he says doesn't matter, because the few girls I have been with and even the two I thought loved me, all left me for other people. Guess I deserved it though...?
I am a shy girl, with low self esteem; given to me by friends, family, and random /boys/ from my school life.
I am hoping that one day I will find a girl who will love me for all my 'faults' and that we can be together forever.
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This is not one of those "I am a lesbian, looking for a girl and blah blah." Which you've probably noticed; I was mainly getting this out because, well yeah can't talk to my family and my friends don't care.
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Though if anyone ever found me interesting, I would not be a jerk and not talk to you or anything. I am a really friendly person. ^-^'