Rhetorical innuendos will get you nowhere. It comes off as insecure, catty, jealous, immature and as if he's on trial for something. Plus the answer for him is easy. "no it wouldn't bother me". Boom! You lost and the whole backhanded thing backfires in your face. π€―
And you don't "keep your dignity", you don't improve the relationship, you don't train him or teach him a lesson. He walks away thinking 'wow dodged a bullet..insecure, jealous, controlling!' And you walk away with...?
The bottom line is he's doing it because he likes it, not to hurt you or disrespect you or embarrass you. These are your feelings, not his motives. If he's not the right guy for you admit it and break up, it's that simple.