It wasn't painful but it was uncomfortable the first time.
Odd I would find this question today! That's because today is my 30th birthday and my husband's 56th birthday! Been married eleven years now!
I don't do this. Mostly my husband is really awesome with me so I would not do this anyway but even when I am not happy with him I just go along and make him happy.
"Marry me?" worked pretty good for me.
I was 18 and didn't "get it" but then I met some kids who are 13-16 and they do. It's different for different people.
I don't think I am all that sexy and I am really tall 5'10" and used to be way thin. I think I look a little better with some weight on me.
My first time was awful and I won't even mention it here past that. All this stuff about girls being instant sex mainiacs is just crap.