Hi, am 35 years old and have been married for 8 of these. For some years now, I can hardly do more than one round of sex. Only one and I cant get it on again. I think my wife is not happy, she would like to have two or three rounds as she tells me her friends do. Infact last night she asked me if it is my body, if am sick, weak or simply not interested in her as much as in the past? Personally, I always thought we had no problem in that department? What is wrong with me?