Virgins were a major turn on when I was younger (like high school and early college). Now that I have more experience, I like a woman with some experience so she can teach me some things. Also, I like when a woman knows what works for her to get off. As mentioned above, virgins require a lot of patience and are a significant time commitment.
I agree with the sentiments mentioned above about women my age who are virgins. My wife has a friend who is still a virgin at 27 years old and she is a combination of extreme religious beliefs and baggage.
I always notice a cute face with a nice smile from across the room. When I'm up close, the eyes seal the deal...
To sum up... (for a clothed female) = Face > Smile > Eyes > Butt > Legs > Breasts > etc.
I have trouble cumming from just BJs but I will echo several thoughts that have been brought up:
1) Enthusiasm is essential. When a woman grabs your cock and moans while sucking you off it is majorly hot!!
2) I love dirty talk before and during the BJ. Telling me how much you want to swallow my cum or how bad you want to suck my cock gets me ready to pop!
I get off on lots of noise especially slurping and moaning. The clincher for me is a woman on her knees with my cock in her hands telling me how bad she wants me while looking up into my eyes with that "I want to fuck you" look...
Hey ladies, just curious to know what part of a man's body makes you melt...
I actually think about sex less if I haven't cum in awhile. Once you finally do cum the release is amazing!
If I don't know the girl then I'm probably using a condom. My simple rule... if I don't know you well enough to know that you won't get pregnant... I pull out.