My girlfriend and I have been dating for about 6 months. Shortly after she had got herself vacinated for HPV (as I have genital warts and had asked her to do so) we haven't really connected sexually. I can get myself aroused fine on my own, but when we try to have sex sometimes I can't get erect or maintain an erection. She usually gets frustrated and I get discouraged. This has been making me feel a growing distance with her. I spoke to my doctor about erectile dysfubction, but as he states ( and I agree ) that if it works some of the time, then there is no dysfunction, It could be a psychological reaction. Also, she has told me that her past 3 boyfriends have had the same problem. I try to stimulate her any other way, either manually by hand, oral sex, and she doesn't get aroused. I respond pretty well to oral stimulation from her, but it doesn't always work. What can we do to maintain my erections so that we can have sex more often?