Of course he was texting her. You just brought him water, joked with him, cooked him dinner and washed his socks. All while he just spent your kids' food money on his vacation.
He has no respect for you, and you're not doing anything to command it.
I think the water was a common courtesy; the rest was over the top, in my opinion. You're way, WAY too far into this DB thing to simply say "I know I shouldn't have, but . . . " every time, like a Newbie.
