I would not even try to make assumptions regarding OM and how he may or may not be a part of your W's future. That is just going to eat at you and cause you heartache for no reason.
Believe me, if you two have had a long break and are just now having increased contact, she is most likely having the same emotional whirlwinds.
Me: 42 W: 32 Married 7 years together 8.5 S1: 7 S2:7 Bomb #1: 09-16-13 Recon #1: 11/13 A discovered 04-03-2014 W filed D 05-19-14 but never served me I filed D 12-02-2014 S 05-31-14 Divorced 5-19-16