It's like this.............if you are in a relatively square relationship........
Jus go out..........if you know your girl clingy just send her a text, let her know what's up but sweettalk her and say "I'm out chilling" blah blah, "can't wait to see you, talk to you later", blah blah some sh--t to make her laugh, make her feel secure, and good.
Every now and then you gotta "reheat the stove" but you don't gotta be all remote control and GPS with your life to her.
Most women DON'T want you to be so weak that you have to ask permission (lol), they want a MAN..........all they wanna do is be secure in the moment.
If your girl is sweating you and calling you a million times and you did the above, then fu-- it, it's gonna just have to be an argument. In reality you're right, so state your case and let her know that you're a grown man and what type of man would you be if "blah blah blah". If she got attitude, she'll likely say something like "what if I did XYZ, you'd be ABC about it". Say "you can do whatever you want, if that's what you wanna do". Don't say nothing else just walk out. This is how it's done. Come back later, contradict your last statement (cuz it'll make her feel good, smooth things over) BUT DON"T APOLOGIZE and you're all good. In time she won't even ask you that much.
The irony is.......if you doing your job right, your women is GONNA want your permission or WANNA let you know what's up with her at all times. You DON'T HAVE to trip or inquire. It's GONNA fall in your lap like that. If you don't then...be prepared to cut your losses and move on. My woman always puts on something revealing and asks me "Can I wear this?" if she going out without me. All she wants is for me to say some b-s- jealous sounding crap that makes her feel like I want her all to myself. I really don't give a crap what she wears, cuz she (as far as I know) don't wanna be with nobody else.