Your OP said that the daily texting had been a recent development, so things have changed. What you're describing is an acceleration in your relationship and unless one or both of you put the brakes on, the friendship will accelerate further.
The excuses you make about this are not new. This might offend you, but they are the same ones everyone makes when they are unfaithful. E.g. My marriage was unhappy so he didn't cause this, his marriage was unhappy so I didn't cause that, as long as we don't meet it's harmless, as long as it's not sexual it's ok, if we told our partners it would hurt/anger them, he's a decent man unlike the other twunts I've met......and a lot of that defies logic.
He appears 'decent' to you because he has an agenda. You are treating him as a rescuer, but if you were his wife you would want to scream that while he is busy rescuing some other unhappy woman, he's shitting all over the unhappy woman at home who's already put up with his infidelity at least once.
Your agenda seems more complex, but I think it as at least in part some defiance and rebellion on your side. You've chosen to give up friends in order to appease your husband. And yes that was an active choice - you could have said no, or left him. Now you want to punish him and I expect at least part of the buzz of this is that you're getting one over on a man you despise, but who you lack the courage to leave.
It is utterly pointless punishing someone for something unless they know they are being punished and why. It's covert, underhand and passive-aggressive.