Need a Plan for My Marriage

[LSG]

My W is very distant and does not talk to me much, not even good night. I am get better at no worrying about it. She still wears her wedding ring, and is nicer to me lately with some more Thank Yous for dinner and so and so. I do not clean up after her or do anything for her. I cannot be nice these days. It just seems so wrong when she is seeing someone else. I do not know if this the right approach, but it seems to be the way a lot of people do on this forum. It is absolutely exhausting to not show my feelings for her when I have so many. I guess that is just the way it is. I will keep with the plan I have so far. I would appreciate any and all help. I believe that marriage has a chance.