It's really hard to predict the future.

I know two couples who have gotten back together. Both had kids. One couple had been married and divorced. The other never married but had a lengthy court battle over custody/support. Both couples got back together for convenience/kids rather than romance. The first couple has been back together for a couple of years and seems to be doing well, a renewed romance. The second couple split up a second time due to an affair but is now back together again, not for the best, imo.

Why do you think your wife has approached you about reconciling now?