my girlfriend and i are involved in a long distance relationship and have been for about a year. we see each other once every five weeks on average and when together we are quite sexually active. the only problem is that when intercourse first begins she complains of pain which has never happened with her other boyfriends. her list of sexual partners is fairly short but mine is a little longer. i have never shown any symptoms of any kind of venereal disease and aside from this she has never had any kind of problems either. any thoughs/advice would be greatly appreciated.