I think it has to do with a person's love language. Some people need words of affirmation. Nothing wrong with that. If your spouse knows you need something to feel loved, and refuses to do it, that's pretty dick-ish. I don't necessarily understand my husband's need to be told that I love him and think he's great, but he needs it, so I do it. Acts of service make me feel loved, so when he mows the lawn or does the dishes, he gets lucky, lol.