If you're going to be gay because you want some human contact, you are a little gay and should embrace it. Being ok with some experimentation isn't going to keep you from pursuing women.
If your body wants girls, let him know. LGBT people will understand, sometimes people try things, and their body and mind doesn't respond in the expected way. He was there for your needs, don't shove him out and run away from him, just be honest, you're infatuated with women. If he understands your desire for women, he could be one of your best friends for life, don't ever feel bad for trying something.