Do you think ity is enviromental?

When I was a child I was not informed of society and uality. I was a teen and honestly I think I had those feelings because everyone else was doing, it was enviromental. A lot of people claim tey were born gay, but I just don't beleive it. A lot of people that I knew claimed to be gay, even a male friend, now he's straight and beleives he had those same feelings do to all of the gay extremity at the time....what do you guys think?