I don't thnk that's necessarily true. I'm 17. I just started getting images and thoughts of same sex fantasies. When it comes to masturbating, I haven't been able to sOlidly yet. It's a phase. It happens to everyone and the best part is, we all get through it the way we want to. My girlfriend has also gone through this phase at your age. You may not see it by 18 because it purely just your hormones talking. Anything sexual gets us turned on ab this age. I'm sure noone has a problem with agreeing. Everyone hasthat bisexuality in them. And if not all, most teens go through a phase where they believe they are homosexual. Due to fuzzy feelings inside when they think about men instead of women.
It all in the head and the hormones dudes, here's no fret. Although I'm still kind of freaking out about it!