ok so i invite this girl iv been trying to to get iinto for a while now and were in my room watchung tv and going on the computer for about an hour before anything got started, the whole time im thinking about boning, most of the time i had a boner but she aint realize. this makes me nervous i dont know why, prob cause i like her a lot, but when i finally made my movce and things started getting hot and heavy someone knocked on my door so i got half way dressed and went outside to see what they want, had to put myself in a mental state to lose the boner. so when i come back i couldnt get hard for nothing, she sucked me off and everything couldnt get back up. this has never happened to me before, think it was a combination of me being so nervous and the interuption and the fact that i had a boner for like almost an hour before anything got started, any of this ever to anyone, any advise the for the future other than dont wait an hour before making a move?