Perhaps in his mind, if you were really attracted to him and turned on by him, you'd "lose control" and be "up for anything". A "sexual frenzy", if you will.

Placing limits on what you'll do with him sexually seems like "holding back" to him. Especially if you won't do for him what you ever did for someone else... it's like that someone else is more deserving in your eyes or turned you on more than him.

If you'll have sex your way, but enthusiastically, maybe that'll send the same message to him that he's looking for by asking you to push your boundaries.

In other words, instead of having "vanilla sex" have "Blue Bell Natural Vanilla Bean sex".

Perhaps he's also looking for reassurance that you getting older and more mature isn't a sign that you'll ever have any intentions of sucking all the fun out of his relationship or his life.

a fine and enviable madness, this delusion that all questions have answers, and nothing is beyond the reach of a strong left arm.