How do y'all respond when you meet a straight guy that ur extra extremely attracted to that is a really good friend, but he doesn't know ur attracted to him. Do you dump him and avoid the excruciatingly painful feelings that you will endure, try to suppress your feelings or, keep at a distance or continue with the friendship?
There isn't a cast-iron answer to your quandary; you have to do whatever you're strong enough to handle. If you are able to keep him as a friend without making a move, while steadfastly repressing your emotions, then do it! Why lose a friend? If, for some reason, you can not do this, then perhaps you should consider moving on.
If you'd like my personal opinion, I think you should exert a degree of self-discipline and self-control. I imagine it can't be too healthy to continuously end relationships for this reason. I understand this is only one example, but who knows where it will end. This might not be true for you, but I were in your shoes, ending my friendship would only reconfirm the stereotype that says: Gay men are driven by wanton and insatiable sexual appetites, and will always fail to exhibit any degree of control.
Then again, I suspect the definition of 'control' is rather subjective, in this instance. Exercising restraint and discipline might come in the form of you having enough will-power to step away from this friendship because of your other feelings. As with most things, it's all a matter of how you look at it. And how to look at it is, of course, something I can't tell you.