What if a girl is attracted to another girl but the girl is straight?

This is not particularly abnormal. A lot of females find themselves attracted to other females. To be honest, the same is true for straight males, but they NEVER talk about it. This is an example of where gender can bring about radical difference in what is socially acceptable.

It can be hard, and sometimes hurts a little but because they do not return your feelings but this can happen with two gay or two straight people as well, depending on one's attraction.