Hello, I do not at all enjoy having sex using condoms. The problem is that during intercourse after 3-5 mins I lose erection and it does not come back at any cost. But without comdom I feel the true sensation inside vagina and hence do not lose erection. Infact I can last for hrs without condoms. As we all know the essence of having protected sex, I am really frustrated with the comdom thing. It does protect us from STDs but it kills the very sensation and ecstasy of a sexual encounter. I greatly dislike using condoms for the very two reasons: 1. It does provide the real sensation and 2. It kills the erection. I have tried every other brand of comdom available in the market but none of them has helped me. Moreover I am a very athletic guy with great libido and sexual endurance. What am I supposed to do? And one more thing, what are the best ways to prevent or decrease the probability of STD infections after an unprotected sex?