So me and my boyfriend both agreed to have sex and so it lasted for only 3 minutes till he got all soft out of nowhere ?! never had that problem with any other boyfriend i had... and i felt really bad but what could be the reason for it ? i thought maybe it was cause he worked himself crazy earlier that day playing football so maybe he was tired ? or he did jerked off that morning ? he is only in his 20's and he is too young for Viagra. He also always complalins about his penis size it gets on my nerve cause he's a 5 inch and says he's small, is that small ?