I'm not sure what is going on there. It is the strangest relationship ever in the BB house imo. I don't know whether Steven is utterly besotted with her which has made him take leave of his senses or he's just pretending to be.
As for Kim, she has no more interest in him that she has in
anything, frankly. When he puts his arms around her he might as well be embracing a sack of cement. When he kissed her tonight she didn't move one muscle in response. Not her body, not her arms, not even her lips. He would have gotten more in return from a blow up doll. The whole thing is very very strange.