Im like mesmerized but how beautiful this girl is shes so perfect...buts shes my best friend also i have a gf!?

Dude..not to be mean...you sound real shallow. First of all you have a girlfriend, it is okay if you have a crush on her, but if you are thinking about her mostly because she is beautiful...that is a problem. When you are with a girl, yes looks are great too but you have to look at the personality too. If your girlfriend is a girl you can act normal around and fun to hang around you need to put your focus on her. One day you will get caught, if you thinking about the other girl too much it might come back to bite you on the rear. Believe me, no girl wants a boyfriend who constantly calls her another girl name.