How do you know if your husband is cheating? I just have a feeling.

My husband is being excessively nice to me. He's always nice though but this is different. He's about as close to perfect now as you can find. Which scares me. Nobody is perfect. He occasionally stays longer at work but I've been there and I know he's actually working. But there's still time for him to do other things.

Should I be keeping a watchful eye on him or should I consider I hit the lottery? I'm definitely a skeptic.

Also note his routine is to get up early to go surfing and doesn't come back until after work. I don't know where he showers!