Mel, just catching up on your situation now. You are doing well, you are only 1 month into this and I think you have "caught" on to DB'ing pretty well. At one month in I was still crying all day and not sleeping either. I did get a Rx to help with sleeping. I remember I took an Ambien that sent me to the ER- that was a terrible drug for me, be careful if you end up on that one. As far as the mixed messages your H is giving you- please don't try to read into them. I am almost 10 months into this and still fall into that trap and it gets you nowhere.
When did H start lexapro? My H started it 2-3 months pre-BD and I believe it was a contributing factor to BD. He went from "depressed" which wasn't good, but he was loving, to completely numb, no feelings except rage, no sex drive- actually ED, and I think it pushed him over the edge. I know it works great for some people, but for others it can make things worse.