My question is on Sexual interest. Whenever i feel aroused, my penis erects but it is for a short period, and within this period if i penetrate then i could enjoy sex, but if i indulge in foreplay for long, i am loosing my erection and after which my penis doesn't erect. Suggest any remedy for the problem. Also during the act i feel that my body heat increases during foreplay. Any connection with the erection problem