Stabler didn't really returned the kiss. More, he just let Keller have his way. His dick was only half hard by then as he felt the other man pushing against him, scratching at his cheeks. He liked being dominated but pain? Didn't turn him on in any way. Weakly, he pushed his hips back against Keller's, trying to seem interested. Hell, he was trying to get into it again, wanting to at least feel some little jolt of pleasure amongst the painful attentions.
"This isn't affection." He whispered meekly against Keller's lips.