I can't undo

-3rd person POV-

Levi's head spun uncontrollably and he lost his balance on the 3dmg, causing him to crash into his lover.

"Oww" the brunette whined.
"Sorry" Levi apologised. They tried to get up but only fell down again, tangling the cords even more.
"Uh. Levi. The cords. Are tangled." Levi's boyfriend said looking down at the wires. The wires started to retract, pulling the boys into closer proximity to each other.
"I'll untangle us." Eren said. The two started to untangle the cords, oblivious to how dirty their movements looked to other people. A certain scientist had the dirty mind and she walked over to the couple.
"Levi, that looks very wrong. You look like you're giving Eren a blowjob." Hanji stated. Levi glared at Hanji with all the hate he could fathom.
"I can't get it undone." Levi said.
"What can't you get undone? The cords or Eren's zipper?" Hanji mocked. This time Eren AND Levi glared at the scientist. She backed away from the two, leaving the two, to sort out the mess on their own.
~4 hours later~
Levi walker into the mess hall with Eren. Eren was on his back and they both had their gear on.
"Eren? Why are you on the Corporal's back?" Armin asked.
"Levi- I mean the Corporal lost his balance in training and we crashed and the cables got tied together and we can't get them undone." Eren explained from the place on Levi's back. Levi sat on the bench sideways, allowing Eren to awkwardly sit next to Levi to eat. Mikasa came over and glared daggers at Levi.
"You didn't hurt my brother did you?" She asked.
"I might've when we collided but other than that no. Anyway why would I and to hurt my boy-" Levi said, still eating the slop that was their food. Eren nudged him in the side to stop him from going any further with that sentence as he knew that Mikasa was blind to the fact that were dating. Mikasa overlooked the odd behaviour of her superior and her brother.
"Hey Mikasa!" Eren called out.
'I don't care if she knows' He thought. Mikasa turned around and Eren captured Levi's lips in a kiss. After the kiss ended. Eren smirked at Mikasa and untied the cords on his and Levi's 3dmg effortlessly. Levi sat there as Eren undid the cords that bound them together. Eren walked out of the mess hall, leaving a VERY confused Mikasa. Levi got up and whispered in Hanji's ear.
"Well maybe I couldn't undo the 3dmg cords but I can certainly undo Eren's clothes." He then followed his boyfriend to the bedroom they shared. Nobody dared to go near that bedroom