I've heard some girls cry afterwards/during etc. etc. I didn't. I had a great time when I lost mine. It was the right lad and we lost "it" together at 19.
I did however cry after the next person I slept with because it was probablywhat most loss of virginity experiences are like - no affection and all over in about 2 minutes and he just got up and walked off to the bathroom and then just got dressed again. Fucker.
From what I remember sex is different with someone you love. Although I can't remember what that feels like because its been four years since I slept with someone I was in love with. :/