I thought I was straight

A few nights ago I went out clubbing with some friends (recently made, just started uni). One of them is gay, and after getting back to his he offered me to stay as I'd have to walk back to my accommodation.We ended up spooning, talking for hours and eventually kissed. I felt everything I do when I fall for a girl. I'm so confused as I've never thought about another man like this. I don't think of him sexually either, I just feel like I want to be with him. Any advice guys? We've spoken since and we've both said we felt something. I really don't know what to do now. Does this make me bi?