Granted that some of the real jerks of the world do get the girl you might want but think about it would you really want to be like that person? I mean yes he may have something she see's but honestly you can see that he doesn't exactly have the most positive qualities. Would you abandon your own self to be like him just for the sake of someone else? Sure, you might not get that girl today but that doesn't mean the right one won't show up tomorrow.
I was so focused on relationships, and getting married I disregarded a whole lot of things. I never sat down and thought maybe that cute girl sitting on the other side of the class wasn't for me or she just might not be the one right now. But after a few failed relationships and heart breaks and failures I learned to not jump ahead of myself and go off the deep end. I am who i am and changing that just to be able to go out and get someone (unless honestly it was a change for the better but that is up to interpretation to each person) is foolish. If i am happy with who I am.