I think my wife deserves a husband who cleans, cooks, makes her lunch, lays her cloths out for her among other things because that is the wife she had always been to me and I never met her half way.
A couple of inconvenient truths, or at least observations:
1) Not while she is having an affair, no she doesn't. You do need to let her know that once she ends it, you are willing to address any and all issues, and you may in fact choose to DO some of these things (or similar things) in the meantime, if you feel they are The Right Thing to Do, but you shouldn't do them because you feel she "deserves" them, nor to get any sort of reaction out of her. LOVE may be unconditional, but BEHAVIOR is full of all kinds of written and unwritten civil contracts. Bad, foolish, destructive, or hurtful behavior doesn't "deserve" to be met by such kindnesses, in my opinion, and I would also argue that it even enables more of the same destructive behavior.
2) In my experience, women don't find these kinds of things to be very attractive in men, on average. We can debate that all day long, whether or not it "should" be that way (and for the record, I am a classic "Nice Guy," who loves to cook, buy my wife flowers, write her song lyrics, made her romantic CDs, etc.), but it just IS.