Question: my question is regarding erectile dysfunction. I'm a 19 year old overweight male and a virgin. I recently got a girl friend and whilst i am able to masturbate and achieve orgasm over the idea of her and the foreplay we have done and also masturbate and acheive orgasm over other materials such as adult magazines. However i find i am unable to produce an erection at whim when im with her and she is also unable to create an erection for me using her hands. Also previously when engaging in mutual masturbation i have lost my erection. Now is this because of the fact that i am a virgin and not experienced in sexual encounters or is it notice of a deeper sexual problem. I know for a fact im sexually attracted to my girlfriend so its not a problem in that respect. hopefully you can offer an explanation and maybe a solution. Thanks