Do you honestly think there is someone out there for everyone?

I know it's a bit of a cliche, but do you think there is someone out there for everyone? I just wanted some opinions about this. I'm 20 years old now, and i've never had a girlfriend, i haven't found that special girl for me. I see many couples so happy together and i wish that i had that so much.When i was in my younger days like 13 - 17, i literally had lots of girls who were crazy about me, but i was never really serious about having a relationship. 3 years on now and i've matured now and i definitely want to have a girlfriend and funnily enough, i have no girl like even interested in me or none that i know of anyways. I don't expect it to be like it was in the past, girls are now women and have mature attitudes, but it's a bit daunting i must admit. I think i have a lot of good qualities to me, i'm kind, respectful, a bit funny, i try to make everyone feel comfortable around me, but yet i have no girls who is is after me. I think that i'm too nice sometimes and that's my downfall, but that's me and i don't want to change, i see a few relationships where the guys are just asses, and i wonder how come they are in a relationship and not me. I guess it's true what they saw nice guys finish last. Tell me what you honestly think, insults are particularly not lol, but i guess it's welcomed, if you think i deserve it.