"A lover?" Kash lay his open hand on his thigh for her to put hers in it, if she wanted to. He probably wouldn't want to be touched when he was feeling the loss of Z, so he left it up to her. "If you don't want to talk about it, or don't want to talk about it now, that's okay." He just didn't want her to think he didn't know how much of her went into that song.