I question you about your plans for the holidays to see how much time you'll be spending with your girlfriend. To my surprise you won't be spending more than a full day with her. I notice a pattern that you two never spend the night with each other. Surely you're old enough and allowed to stay over with your girlfriend. Once I start asking if you're sexually active I realize that you're a virgin. You eventually confess that you're nervous you won't last long your first time. Your girlfriend has had boyfriends and lots of sexual experience before you. I decide to help you last long by teaching you how to edge. Since you don't have lube in your room I get your cock wet by sucking it. Which leads to titty sucking and I eventually jerk you off while encouraging you to not cum until I say. Just as I'm about to let you cum your step-dad walks in the hallway and I tell you to be quiet and hold in your orgasm until he leaves.