Mark hit enter on the computer as he laughed "With tits that size Jess would be a real milk maid" he thought. What Mark did not notice when he was modifying Jess's stats was that he had accidentally increased her sex drive as well.
In the shower Jess had seen her breasts getting bigger and was scared for an instant when the increased sex drive hit and she started playing with her new breasts, getting even more turned on as she did so.
Mark then went to the bathroom as he needed to clean up himself, as he opened the door he was shocked to see Jess still in the shower playing with what had to be a set of J-cup breasts. He got over his shock after a moment and started getting another hard-on just looking at her.
Jess turned to see Mark's hard-on and smiled then said "Why don't you come in here and let me take care of that master" as she open the shower door.
Mark didn't hesitate as he got in the shower and started going at Jess again.