My husband confessed five

My husband confessed five months ago that he had been unfaithful for the past 6 yrs and had been seeing a woman for 2 yrs out of the 6. Of course I wanted to know why especially when I saw three of their pictures in his phone talk about down grading. My husband told me he wasn't attracted to me, he wasn't happy and he thought we were eventually going to get a divorce. Which I thought was a bunch of malarkey because he always seemed happy never left any clues and when did have explosive arguments where I wanted out he would always convince me to stay. The one thing I'm having trouble with is now he's always over the top happy calling me through out the entire day face timing for 2 hours at times. My husband says that I have changed for the better I am 42 yrs old I seriously doubt that I changed, I tell him maybe because he doesn't have a distraction and is able to focus on me only. This is definitely hard and taking one day at a time.