Your insatiable futa girlfriend wants your cock but she has one rule - if you cum before she does she gets to finish in your ass! She lovingly refers to you as the "premature ejaculator" because you usually can't hold your load once you get a taste of her pussy. To try and not bust too quick, you have her play with herself in front of you, taking things slow. But once your cock starts stroking her pussy and she starts begging to touch her cock you can't take anymore and cover her with cum. She also finds herself close to the edge and doesn't last long inside you either.