There is a person who is afraid of losing the one they love, fearing that the person might distance themselves.
If you stop them from doing something, telling them not to do this, not to say that, not to wear this.
Then to them, all of this feels like restrictions rather than concern for their well-being.
They feel bad that you are stopping them, preventing them from doing what they want, binding them, imposing restrictions on them, imprisoning them, taking away their freedom.
They will say that if you are telling me all this now, stopping me, then after marriage you will make living difficult for me.
After hearing all this, you feel angry, it doesn't feel good to hear, but you remain silent thinking why escalate things unnecessarily, let them do what they want.
If you say something now, they will feel bad again.
They don't care about your feelings; they will do the same things that you don't like again.
Why?
