At work today I was having a conversation with my coworkers, and an interesting 'theory' was brought up. Now keep in mind, these were guys so who knows where they came up with this.
The idea is that a girl who is dating a guy that is less attractive than she will be happy and the relationship will work. This is because the guy will feel that he needs to try and work a bit harder to be with the girl so that she won't move on and find someone else. But if a girl were to date a man that is more attractive than she, the relationship is likely to fail. This is because the girl will feel insecure wondering what he's up to all the time, and worried that he will leave her for something better.
In a way, it makes a bit of sense. I'm not saying I agree with this completely, I want to believe that a girl can date guy that's better looking than she is and be happy, and be in a place where he wants to be with her and not with anyone else (better looking or not). The way we were talking about it though made me feel like 'Oh great, so I can't be with an attractive guy without him leaving me for someone else or me feeling insecure all the time?". It wasn't the most encouraging conversation. I like to think that this isn't completely true. Then again, I guess it might all come down to how confident you are too.