Saving Them Both For Marriage

A stepmom, Dee Williams, questions her stepson, Tyler Cruise, and his girlfriend, Lilith Grace, about their not-so-subtle attempts at researching how to have sex without taking Lilith's virginity. Embarrassed, the teens explain that Lilith comes from a conservative family who believes in saving her virginity for marriage. The teens want to respect this but are also horny, so they are looking for options...
Dee is supportive and starts listing off foreplay options, though the teens are lost, especially Tyler. Dee then suggests that the teens try foreplay on each other in front of her for guidance. Tyler is a little shy but Lilith is happy for the advice, so they agree to it. Dee gets the teens to try various foreplay techniques on each other, and everyone starts to become aroused.
Dee then questions if the teens have had anal sex yet - after all, that would definitely keep Lilith's vaginal virginity intact. The teens admit that they haven't done anal before, but they've thought about it. Dee then offers to let Tyler fuck her in the ass first, so that she can teach them how to have anal safely. The teens are surprised but soon convinced to accept, since they can't hold back their raging hormones any longer. With that, they all come together for a threesome, including Tyler fucking Dee in the ass and then trying out what he's just learned on Lilith!