I and my gf (both adult she is 25 and im 26)were trying to have sex for 1st time and without condom. We both r virgin. When I tried to penetrate my erict penis in her vigina it was not passing inside her. We tried using figures at 1st and then tried it several times with penis. But that Dnt worked. She says cause my penis is fat and not so erict too. But its erict to go inside.we did few days later also but no luck. What can be the real reason and how shall we do. Thanks for ur reply.