Would it be weird if I asked my guy friend out to the movies or something?

First of all, no it is not weird at all to ask a guy to go out to the movies. Take a shot at it and give him a call. This time, leave the friends home. Going dutch would be the appropriate thing to do, since you are just friends. You're young. Go and enjoy yourself. Don't worry about what people are gonna say or think about you being 2 inches taller than he.