My H is bad about emailing me, even though he knows that I looove it when he contacts me in the morning. I do believe that it honestly slips his mind, rather than him having some diabolical plan to make me unhappy.
Try to stay away from the OW thinking. Concentrate instead on the GREAT weekend that you had!
And look at it this way: There is a good chance that he was distant or distracted this morning because he had had such a great weekend with you, but knew that he had to go back to work and deal with all the OW crapola. I know that, if I were him, I would DREAD Mondays and going back to the awful situation that I had created!
Here is another thing I do: If I am debating emailing H or not (letting my ridiculous thoughts trick me into thinking that he doesn't want to hear from me), I will usually opt to send one, but keep it short and sweet. Something that is kinda noncommittal but a 'contact' nonetheless...like, "How is your day going?" or "Hope your day is good!" and leave it at that. Then the ball is in his court. He almost always sends me back a nice email, too.