In this day and age, teenagers are so against real love. It's not cool to be in love anymore, but only to have weekend hookups and side chicks. This bitterness has been instilled in almost everyone and the ones in love have become the minority. Many aspects of love are now mocked or althougher lost. It's been said countless times that asking your significant other for permission to do or wear certain things is absurd. Yes, it's true, they're not your parents but they have become an integral part of your life and offending them should be the last thing you want to do.
Stop listening to the outside world.
If you are in a committed relationship, all communication should be through you and your partner. Other people will always have their opinions, but if you are confident in your relationship, those opinions should go in one ear and out the other. Never let anyone tell you what is good, or healthy, for you.
It is okay to ask to do something.
If your partnership is healthy, asking for permission before you do something shouldn't be frowned upon. Not every little thing needs to be approved, and many times you know they will say yes, but it is the principle of the matter. Many times it is, "hey, do you mind if I go out?" and not "can I go out?" but either way it lets your partner know you care about their opinion, and their feelings.
It isn't about control.
One of the main criticisms against asking your a significant other for permission is the fact that they many have too much control over you. It is actually the contrary. Asking if something is okay establishes a connection between you and your partner. It is about respect. Letting each other know that you will never cross the boundaries that you both have laid is extremely important and asking permission is a perfect way to do just that.
Love and be loved.
You and your partner should rejoice in each other's presence. Nothing, seriously nothing, should keep you from wanting to be close to them. It shouldn't matter who is around or where you are. It shouldn't matter if other people don't approve of your relationship. Always remember that you know what is best for you at any given time. Only you and your significant other will be able to communicate to each other your needs and ask to make sure everything is okay.