Op here. Thanks for all your comments, concerns, etc.
Dan, I don't think it is me you are thinking of. Or else I have conveniently forgotten!
Really, I can see how he could be out until 2 drinking coffee. They frequent an Arab coffee place, which is open late and is quite condusive to people hanging around for long hours. Plus DH is notorious for losing track of time. I am not too suspicious about an affair. However, I am very upset about the whole thing, I think it shows a huge lack of consideration on his part. I did confront him about it today, actually, I kinda got really mad and let him have it! I also made sure he knew how if I ever did something like this, I'd never hear the end of it. But in any case, I'm not concerned with an affair or the time frame...just the fact that he did what he did is enough.
Funny side bar to the whole story: he had taken my car, and it was very low on gas. Had he told me he was going somewhere, I could have warned him and told him to get some gas. But he didn't. Anyway, the car starts beeping at him on the way, but he thinks he can make it. Long story short, he didn't! Had to walk awhile to the nearest gas station. I couldn't help but to find that a little funny!