Paparazzi.
Louis: He loves to flaunt you and show you off to the world. Whenever you're mobbed by paps, he'll push through to make a path for you all the while making snide remarks like, "Excuse me, girlfriend coming through!" You blush and giggle, but secretly you love it just as much as Louis.
Harry: He is extremely protective over you. When Harry's around, no one can lay a finger on you. He'd make a shield around you using his body and the body guards. If he felt like someone got to close, he'd without a doubt shout something like, "Get off of her! Don't touch her!" He'd even throw in a few choice words.
Niall: You have never even come close to being mobbed, because Niall simply wouldn't let the paps around you. If they were crowding around the arena, he would go as far as to stay the night there if that's what it took. Even if there were only a handful of paps, Niall would harshly shove them away to keep you safe.
Liam: He despised the paparazzi. Whenever you walked through a mob with him, he'd tightly hold on to you and guide you through, keeping his head down and scoffing at the photographers. One time, the paps got a little close, and Liam-fairly loud-screamed out, "Get a proper job, you dicks!"
Zayn: He adores you, which is why he always make sure you have something to flaunt for the paparazzi. You insisted he not spend anything on you, but there really was no stopping Zayn when it came to making you happy. Whether it was a solid gold necklace or new diamond ring, you were always pampered for the paps.