My husband and I have been together for nearly 10 years. We have one child and are in our early 30's. Every now and then I get this horrible idea that he is cheating. I know I am insecure and paranoid at times so have always put it down to that. Recently I had a good friend find out that her ex had cheated on her the whole time she was with him. Her first words when she found out were "I knew it", she'd often had a feeling. My husband has started a new evening job about a month a go and when he first started he was always home by 9.30, now it's more like 11 yet when I ask him if work has been busy he says "not really".
I don't know what to do.