Basically, i went to have sex with my girlfriend last night. All was going well. Did some foreplay, i played with her clit a little bit then went to put on a condom....AND MY DICK WENT SOFT ON ME. The erection wouldnt come back. I can't even express how embaressing this was...i dont think i have erectile problems...because ive had sex and can get hard. Sometimes though it just goes limp on me randomly and its a real piss off. What can i do to make sure this doesnt happen again....do i resort to viagra?