next time when you meet him, treat him like before but do not sleep on the same bed anymore.
he is lost now
I believe he is thinking a lot now
do I really become gay??
do I love you???
Might be he would go to find a gf later
then you would lose this friend
if he really love you, he would come back to you
expand your world
meet more friends
remember to wear condom
love your self
love your family