When my wife and I have sex, it sometimes takes a little while for me to orgasm. It seems if I dont' orgasm within about 10 minutes, she starts getting raw and sore. She sometimes will tell me to keep going and other times asks me to get off and will finish me with her hand. She is over 50 and says its common with women her age. We use massage oil but she still has this problem.
Is this common for women over 50? What can we do?