mb, you can tell him that you will only communicate via email. BUT if he has the kids, I know you probably worry about an emergency, right? So think about how you want to handle communication when he has the kids and tell him.
As for the text, yeah, my WH has wished me a happy b-day, happy 4th July, happy thanksgiving, and merry Christmas...so what? (don't mean to sound harsh but he is still with OW and your H is still communicating with OW).
Don't respond.
me,34 exH,34 S,16 months S:3/31/09-left for OW started DBing 10/09 d final: sometime 10/10 current: http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2022856&page=1 met in 2004