You shouldn’t feel like you have to date a girl to prove you’re not gay. But you also shouldn’t feel like you can’t date a girl because you also like guys. Point being, don’t worry about gay, straight, don’t worry about how people perceive you, focus on your feelings - do you like the girl and would you want to be in a relationship with her? A simple question, and your answer (and only yours) will tell you everything you need to know.
A much better and less hard-ass answer than mine, thanks. Frankly coffee’s probably got a lot of feelings going on right now so sorting them out isn’t going to be exactly easy.
But think to yourself: what are the things you like most about this development? That she likes you? That she makes the thought of Thanksgiving with the parents and significant other a whole lot less complicated? That the long distance takes some of the physical pressure off? These are “hmm” answers.
Or is it that you like her? This is a “yay” answer. Unfortunately you may have a mix that changes with your mood. That’s normal. Welcome to hormone city–population you.