Based on your last update. "I can't go on this way". Maybe you dont have to?
I would say dont wish her happy anniversary based on the Same roof, same bed no love. Cause you are in an in-house sep whether you believe it or not. In fact the amount of time you spent with her i suspect means you are not DB-ing (i did the same thing, still did my husband routine, celebrated her bday etc, still ended up physically separating).
Im sure you have heard of this game before "What if?" What if you two were well and truly separated but still living in the same house (hypothetically) would you still be doing what you are doing? be honest with yourself. Its okay to be selfish.
Me31 W31 M11yrs S6yrs 23Mar16-BD 9Apr16-W admitted EA w boss. 27Jun16-W Changed job and promised NC w OM. 14Jul16-Continued contact w OM.Start of Separation. 24May17-Divorced.