I mostly just got to thinking about things in a "what if" manner when I was in my 20s, after I had been gradually been drifting away from a community that taught me being anything other than straight was a bad thing, and asked myself if I could see myself doing things with guys, and realized that yes, I could. I would later find that doing things with guys really wasn't any different from doing them with girls for the most part.

Then again, most features that I find attractive about people in general tend to be found more often in girls then guys, but guys with the same features are still attractive to me. What can I say; sexuality is weird.