Honestly Grace, I would be happy if my H took any interest in helping me with household responsibilities. But...he didn't when he lived there so why should he now? I guess you need to ask yourself why you are annoyed and what you hope to accomplish by telling him that. If that was my H and it were me, I would text him and just thank him for doing it. My 180 is to notice more when my H does something as opposed to always commenting on things he doesn't do. What is your 180? You don't need to answer that. It is mainly a question for you. I am all for setting boundaries but if you are hoping for reconciliation, him mowing the lawn without a heads up might not be the hill to die on. A compromise might be to say..."Thanks so much for mowing the lawn but, in the future, if you could give me a heads up on when you are coming, I'd appreciate it." or something to that effect. Anyway...get to the root of your annoyance and then make your decision. Sometimes the best course of action is to do nothing. Totally up to you.