My 17 year old son's school had a talent show tonight and he preformed in it with his best friend. They sang "Lucky i'm in love with my best friend" and the way they looked at each other it seemed like they felt every word they were singing and near the end they held hands. My son had one girlfriend at age 15 and that was short lived; his best friend is gay and I thought he was single not sure now. Does this mean my son is gay or bisexual?