Hi:-) being that this was the first time you two had intercourse the bleeding could be because you broke her hymen (A hymen is the thin piece of tissue that partially blocks the entrance to the vagina. It is sometimes called the maidenhead or cherry.) When the hymen is separated, whether during first intercourse or at some other time, there may be some slight bleeding and a little pain. Both the bleeding and the pain are quite normal and both usually stop after a short time. I would tell her not to worry too much about it. It's perfectly normal...The joys of being a woman..LOL
If you were to read the persons post properly no where in it did it state they had sex for 4-5 hours.... the person merly stated that him and his gf had sex 4-5 hours ago...
I doubt that you had sex for 4-5 hours. Maybe including foreplay but not straight intercourse.
it's not a problem she was a virgin and when u penetrated her hymen commonly known as the virgin knot broke.. the hymen is a thin membrane in the vagina.. most females experience this during the first sexual intercourse but that's not necessary for all.. it's absolutely normal.. the bleeding should stop within a day.. good luck..