Your artsy ex girlfriend has asked you to help her with a project for her class. You were always the perfect model. While painting, she notices you can’t stop getting stiff so she offers to suck your cock so she can continue. You can’t say no to her, especially since your new girlfriend is nowhere near as good at sucking cock as she is. The only slight issue is that she leaves your balls completely dry every time, sucking for hours and hours on end into the night while convincing you to leave your new girlfriend. You just can't turn down that mouth.