Sue, Hope you feel better today. Too often we try to hold back tears, thinking they make us look weak or pitiful, but the truth is, crying is a great way to help with those overflowing emotions and stress. I think your H needs to see/hear you cry. He can't go his happy way and not know what this has done to you!
On one end of the spectrum here we have Karen, who's H has been 100% direct about wanting a D, going out with OW, etc. Then on the other end, there is your H, who is still trying to keep things hidden and under the table. Neither sitch is easy, but I think yours has to be worse of 2 evils.
I know you've mentioned it before, but when is the lease on your current place? Have you talked to your H anymore about what happens then?