I like guys who has girlfriend

I don't know if it's just me or it's just my luck that every guys that really close to me and nice to me always in a relationship like all my guys friends that I hang out with all the time. And Most guys that are hitting on me are also in a relationship which I found it extremely wrong. It's just upsetting me lately that a person who can make me laugh and smile everyday are the one that I have no chance with and it's contantsly kept happening to me.