Thanks Ahoy, you are right that canceling will show I am mad. And I am mad.
I know that he will bring up the text and the incident tomorrow. I plan to let him talk and my replies will be along the lines of "I'm sorry that it irritated you, I didn't do it on purpose, I didn't know you were watching, it had nothing to do with you".
I feel extremely lucky that I did not see the message. It explains why I haven't heard from him in a week and why when he called the other day he sounded nervous and tense. He was probably wondering why I did not respond to his angry text and expecting that I was now also angry. He probably expected that I would tell him to F off. But I was friendly and normal. Luckily.
It miffs me that he says he is angry because I did it on purpose but makes it clear that he doesn't care that I kissed someone in front of him. Seriously?