Conversation: The conversation between human and AI assistant.
[|Human|] Hi Doctor, Im a 16 year old boy (Im about 1,80 meters and I have no medical history concerning medicins or whatsoever) and recently had sex for the very first time. It felt great, and my girlfriend enjoyed it too, but I didnt have an orgasm and/or ejaculation. After this first time I havent had an erection just by thinking about sex and before my first time this was very easy. I do masturbate once a day  and I move my penis pretty fast and hard when I masturbate. Also I do smoke 1 maybe 2 cigarettes a day. Hope you can help me,A normal boy
[|AI|]  Hello, You are very young aged boy and at this age, there is usually no any erectile dysfunction occurs. One time failure of ejaculation or achieving orgasm cannot be considered abnormal. The achievement of orgasm is learned after few sexual attempts usually. I suggest you stop smoking because it has multiple bad effect in body along with affection of sperm count also. You should also focus on study at this young age. Hope I have answered your question. Let me know if I can assist you further.