Texting you that he misses and loves you, although sounding so good, is breaking the protection order as smacked so cleverly noticed very quickly.
So he misses and loves you. Yet he shows he is very willing to break the law very quickly.
He doesn't take the law seriously.
He may not take you seriously, next.
I would continue contact only about the children. During that, reitterate that he needs to realize the harm he has done, change, and make amends, and that you know that it takes a long time for a person to truly change, and stop the cycle of abuse.
Bet he goes silent, at least for awhile. Or, loses his temper quickly!
If you respond to his text, or other contact outside of the kids, then YOU are breaking what you sought in court to obtain, and the court no longer has any reason to take YOU seriously. Nor so does he, as he will see that you are willing to bend, and want to use the protection order only when it suits you. That's not how the courts play. And you don't want him thinking that the protection order is manipulation by you, to use when you want to, and to not use when you don't want to. He would be correct then in thinking that you were manipulating him then.
Court orders aren't to be messed with. You got it, honor it. Don't let him lead you down the path of breaking it! It's a test by him to see if you are weak or strong.