Could I be gay? I'm 15 years old and have been told that guys my age go through this as a phase.?

Let me tell you why I think I could be gay. I have ALWAYS been attracted to girls and been in love with many girls but I have never had a proper girlfriend but thats because I'm afraid of rejection. When I see a hot girl anyway I ussually just look at her **** whether it be on tv or me having a conversation with her, though I do try not to be to obvious when looking at the **** while talking to the girl. I have pretty much been raised by women (my mom and grandma) and Iv noticed that I'm a little less butch then guys but its hardly noticble. I was raised with not having a problem with gay people and have met 3 that have been a partial part of my life, 2 I call my uncles and 1 is my godfather. When I was 7 years old my very close friend suggested we ''practicing for girls'', back then I had my first crush with a girl who was also the same age as me and I was in live or had a MIVE crush on her for 5 more years. When wedid this practicing we would make out for hours. I deeply regret it