How odd for him to send you those texts. I remember Jennifer Aniston commenting, while going through the D with Brad Pitt, "His sensitivity chip is missing". Sounds like the same thing here...
If I was living with a guy who was divorced (just hypothetical!) and I found out he sent a text to the ex implying I was a witch..... Yeah doesn't sound like he is so content.
Good luck on the new eating plan. I hope it works well for you. As for your mom, I know my grandma did the same kind of things with my mom. Any time my mom had plans out of town, my grandma would have a 'bad' weekend or some kind of 'incident'. It seemed hateful to think they were connected, but it happened ALL the time...
The last year of her life she got stuck in the bathtub and could not get out three times. My aunt lived with her but could not lift her so they literally called the fire department each time to get her out...I know it is hard to deal with but you are doing well. Glad you still had plans for the weekend.