@LouisianaGirl I think you said it best. Permission can be given to be with you, but to love you?
Maybe I just don’t like the way the question is worded, but first of all you don’t give someone permission to love you. You can’t stop them from loving you either. You can sure make it hard, though. It is up to the other person to decide to fully love you or not. And fully would mean Agape, or unconditional love. Love that is a decision to love no matter what happens. Even if that love is “not allowed” or unrequited. (not returned and one sided)
So I guess “allowing” them to love would mean you make it “easy” by returning their feelings and loving them, too. Fully meaning you both truly open yourselves like everyone has already said.