Have i made my gay friend straight?

last week i broke up with my boyfriend (he didnt agree with my decision to get a nose job), we'd been together for 9 months, and i was really stressed about it, and upset, not to mention still getting used to my new nose. i spent the day after at home watching tv, i rank in sick for work and spent the day watching tv and generally being moody (im 22). i text a few friends but said i wanted to be alone. at about 6pm Bradley (my gay friend) came around to try to see if i was alright, he brought around a bottle of wine and we started chatting. he said how great my nose looked and said he was thinking about getting his done. then all of a sudden i dont know what came over me, a sudden moment of stupidity. i was looking at his nose, and i kissed him, on the lips. before i knew it we were making out and then......

when i woke up in the morning he was there, but on the couch. he made me breakfeast and we talked about plastic surgery a little more, then he had to go to work. we didnt mention what happened before, but i know i wasnt dreaming, i found protection in the back of the couch.

ive know him since high school, he has been openly gay for as long as ive known him, and he has had boyfriends so i know he's not faking.

i just want to know what happened? i know i led on, but he accepted my love, why? was he being a good friend? should i apologise?