1) Girls don’t operate like guys in the ‘friend’ regard. A girl can give a guy her number with the honest intention of being friends with him (I know, crazy huh! lol). Whether she knows that he is interested in her or not comes down to how socially intelligent she is, it’s likely that she does but chooses to ignore it. For her, it really can be no more than a friendship. Women love legitimate guy friends. My own female friends are often disappointment that guys only want to sleep with them and not be their friends. So the first option is that she could see you legitimately as just a friend. However having said that, I don’t believe that this is going to be the majority of the time, for the simple reason that if she has a boyfriend, she won’t be in a huge hurry to make new guy friends. Something else is likely afoot.