I guess you were an anniversary would be tough to deal with. However typically anniversaries are meant as a celebration. So I would play the wait-and-see. Only respond if the wife makes first contact.
If you make the first move then you're going to have expectations of some kind a reciprocation. If you don't get any then you would just build up resentment.
“Things turn out best for the people who make the best out of the way things turn out” ― Art Linkletter
