I have this plate who doesn't return favors. For example, the other day she asked me if I could give her a massage and I answered "Sure, if you give me one first".

Needless to say, she snapped. "What? I do not want to do that. I want this to be unconditional". I was temped to say "no human relationship is unconditional, sweetheart", but I resisted and said "well, if you do it for me, I will do it for you - Unconditionally!"

What would be your proper answer for this?