me and my girlfriend have been going out for 1 month now, im still a virgin and she isnt, were both ready to have sex now but the other day were in bed together and i couldnt put it in her sumhow and also it would stay hard and i think thats why i couldnt get it to go in her i was so inbarassed by it but she didnt mind when but we gonna try again soon and i would like to know why this happening and also is there anything i can do, by the way i was on top first of all then she went on top and i still couldnt get it to go in, why was this??? and what shall i do??