Me and my girlfriend are 18 and 19 and we are both virgins and i have a little over average penis and we do a lot of foreplay and when i stick my dick in her it gets stuck like halfway and i thought it was because she was a virgin but i looked and is like a strand of skin attached to the top and bottom of her vagina. I tried to pull it out and move it to the side but that doesnt work. so i have no clue what this skin is and i dont know what to do. Please help me thank you.