Husband at it again

Howdy. Last year my husband cheated on me repeatedly...often with Hispanic women. (He is Caucasian). We weren't married...just dating...but often talked of marriage. I married him a year ago after being cheated on by this man over and over. I feel like he is up to it again. It starts with porn and then progresses to real thing. He has no conscience. Recently he installed AVAST software on his phone...for no reason. He said it is because of fraudulent activity in our checking account, but we don't do any financial transactions on our phone. I am pretty confident that he downloaded it to keep the phone safe from spam when he is looking at porn and on dating sites. Take today for instance...yesterday we went to wax museum in NYC. Today we went to an antique auction and as we were driving home talking about decorating, etc. he said "wi didn't see Jennifer Lopez" in the wax museum. I know I sound paranoid but that means my husband was sitting there, once again, thinking about Hispanic women. he made some lame story up about singing New York, New York in his head and it made him think about her. Really he just sits around thinking about screwing Latinos. Where we live is overrun with Mexican ladies here for the summer picking crabs. I do not trust my husband one bit. There is a reason why he installed AVAST. I cant think of any other reason. HELP!!!!