Hi my name is John I am a 20 year old male, My problem is i cannot get a erection , and when i do it only last for so long, I just met a new girl and i like her a lot , i am always thinking about it so when the time comes i fails under pressure . I smoke regularly, i do not drink a lot , and i have used drugs in the past, i was wondering what could the problem be cause when i was younger i did not have this problem one bit?