Is my friend gay?

hi, im gay and 16, and my friend is 16. we were playing bball and when he played defense on me yesterday, and tickled my stomach, and i grabed him bak nd he didnt seem to mind. also, when i played defense on him, i played him from behind extra close, so my "bag" touched his "trunk"...he asked what was i doin, but wasnt mad. he has also pulled his pants down to his pubes and shown about 5 of us and he shows us his stomach and always grabs his to make them bigger so he looks like he has abig bluge