Frustrated

I was having a wonderful evening until I got a phone call that threw it all out of whack. Why is it that inside of talking to me my husband get mad after listen in on my conversation. Now my conversation took all of one minute but this leaves me wondering what kind of man would listen to another persons conversation. This also make me wonder where the trust is at: he cheated I forgave him so why is he been so underhanded in the things that he is doing. Believe it or not I dont know if this marriage can be saved for I am consstantly watching what I say around him and he goes as for as to listen to my phone calls.