SwapDream is very touchy-touchy and flirty, he would basically hide in you closet till you sleep and come to caress your cheek or kiss 'em, or kiss your lips. He's very possessive and a kind of yandere. But he can be very toxic. He want always obedience, but he will only hit you with slap and whip that he love so much. And he will definetely come to hug you and smell your scent. He's a romantic Guy. There is a possibility that he slept with you if you turned him on. 
