hmmm... I would read on this forum as much as possible, as soon as possible, so you will have less regrets, so to speak, on what you do and say...
I would be prepared to learn she has had an affair... Emotional or physical.... both are not good to learn about...so be prepared so you can remain calm. And postpone any decisions you are making in your head.... you can decide on separation or divorce or ultimatums at any time in the future. (These thoughts and actions will be hard to do on day one and for some on day 100)
I think it is ok to compete for your wife. You do not own her...even if you are married. You can be sad that she does not love you 100% like she used to... Maybe she loves you 60%.... and that feels unfair (I know from personal experience) But I recommend to first try to do what you will read here. Be patient calm and expect bad things to happen--try to act like a person you would be proud to be when you look back on this 30 years from now.
This stuff is painful, awful, ugly and unfair.
But do the actions outlined an the forum. Do what works--not what you think you should do.....which will most likely be the opposite--- I think you focus on winning your wife back first and then decide later if you want to be married for ever. Win her back first and then decide (that probably does not sound good to everyone)
H (me) 52, W 42 M 15 D14, S12 PA June and Sept 2016 Found out Sept, confronted Oct NC with OM since Oct, remorseful Dating since Nov