Hi, Thanks for posting in HCM. I understand your concern. What problem you are facing is erectile dysfunction related to anxiety, nervousness and lack of confidence. Initially, such things happen to many and fail to get proper erection in front of woman. For this, you can practice behavioural therapy called pause and squeeze technique. You can take drugs to maintain erection like Tadalafil. Slowly, over a period of time, with the gain in confidence, you can stop using the drug. You may also practice meditation to keep your mind calm and healthy, in addition. Relax and perform the act. Spend more time in foreplay during the initial times before indulging in the act. Hope the information provided would be helpful. All the best.