I am 28 years old. I did not participate in direct sex upto now. But I usually do masturbation daily once or twice or sometimes thrice. I started masturbation when I am 13 years old. Sometimes I masturbate by watching blue films. Actually I like blue films I will watch more. So one day I decided to participate direct sex with my lover and also it is my first time. When I am with my lover I saw my penis is didn't getting hard I tried different ways it did not erected. Finally I came out without doing sex I do not know why. I have a feelings on my lover still but at that moment I can not did it. My lover is getting doubt now. Please tell me the solution.