She kisses you

The next thing you feel is Gwen's soft lips being pressed against yours. You freeze out of shock and her tongue forces its way into your mouth. The hands that were previously massaging your shoulders start to **** you down to a lying position on the bed. Your new body, "enhanced" as it is, reacts to the stimulation almost instantly. You feel your nipples harden against the white undershirt, clearly standing out, a target your sister's hands find immediately.

"Ohh, what's this? No bra? You really are going all out with this tomboy thing aren't you."

Her other hand unbuttons your oversized jeans with ease, sliding in and rubbing against your clit. An electric shock seems to explode across your entire body, are girls really this sensitive? This sensation is completely different from anything you felt as a guy.

Gwen's fingers begin to probe the entrance to your now soaking pussy, parting the folds and reaching inwards. Your face contorts in pleasure as Gwen breaks away from a kiss and lustily stares at you.

"A virgin too? oh hot damn, I'm going to have fun with you."

Her hands moves back to massaging your clit and rock hard nipples, sending more and more waves of pleasure rolling across your body. Your breath becomes shorter and shorter and you begin to realize the moans you're hearing are coming from you. As the feel yourself get to the verge of orgasm, suddenly Gwen stops.

"You don't get to get off that easy John, I don't think you told me the whole story behind your "change" did you? Why don't you tell me everything, then I'll make sure you feel good"

You're not sure, your body needs this pleasure, you need to get over this cliff of edging, but your brain wonders if telling her is such a good idea.