Straight Guy let me Suck him 😲

We were sleeping together and Im gay when i sleep i usally dont know what i do i just wake up touching something one night i was so close to his dick and i liked it so i went for it i touched it couple times i was making sure if he was asleep his eyes were closed but i pretty sure he felt that another night went by nd he was acting like he was sleeping and i tugged on his shorts so he can take it off so he still acted asleep nd he took them off and he let me touch him i started getting close and sucked him more more and oh my he got hard then after a while he cummed and i went bk to sleep IM VERY CONFUSED what does this mean? IS he gay? Should i stop? Should i ask him? We haven't talked about it since but i want to know if we can do it again!!