Poe loved to cuddle. Even as a small child, before the intricacies of First Order and Resistance arose, he loved to hold his mother and pets (sometimes against their will) in a warm, comfy embrace. After he almost lost Poe to Kylo Ren and the injuries sustained on the Starkiller base, he became almost obnoxious in his cuddling pursuits.
If Finn was in the mess hall eating and talking with other members of the resistance or Rey, he'd slide into the position next to him (sometimes, erm, forcing one open) and would rest a hand on Finn's thigh, or head on his shoulder. If Finn was in their room on one of their beds he'd pop down next to him, pulling Finn to his chest and holding him there as he read the histories of different planets. If Finn was bathing, he'd drop down behind him outside the tub and hold him from behind; wet sleeves be damned.
Finn began to notice just how much Poe was always touching and following him around. He liked it, the ability to call someone his own and be theirs of his own free will. It was so different and so freeing from how things were as a trooper. When Rey asked him why Poe was always following him, however, was when he realized that not everyone did that to the people they were with.
"I don't know Rey, maybe he's just concerned about me since I almost died those few times." Finn shrugged. "I don't mind it though, it's nice to know he cares about me."
Poe rounded the corner to meet Finn at the precise time that Rey responded with "But I care about you too Finn does that mean I get to do that too?"
"HEY FINN ARE YOU READY TO GO EAT?" Poe said rather loud, cutting off that conversation quickly as it had come up. Poe forced a smile at Rey and told Finn to go ahead meet him in the mess hall.
"Hands off Rey he's mine." Poe whispered to Rey after Finn was far enough down the hall.
Rey looked at Poe for a second and then began to giggle uncontrollably, garnering a few stares from the few others passing by.
"Dude, Poe, just no. I'm not into guys like that. Or girls for that matter; at least not right now. I'm just concerned about you not giving him any space ever." She managed to get out between breathy giggles.
"Oh, sorry, I'm just so afraid he'll leave me one day and I never want that to happen." Poe replied quietly. He then said his goodbyes to Rey and met Finn at the table he had grabbed for the two of them.
"Oh, hey Poe. Is everything alright? I thought you were following me and then you just, weren't. Anyway I made a new friend and he asked if I wanted to go hang out in his room and that he wanted to teach me the 'horizontal tango' one day. I said I couldn't right now and that I had to meet you but he was nice." Finn rambled as Poe sat dumbfounded.
"Who did you say this 'friend' was?" Poe asked deadly quiet. Finn pointed to one of the fighter plane mechanics who was staring at the two men across the room.
Later that night, Poe cuddled with Finn until he was ready to catch up on some sleep.
"Good night Poe, I'm ready to hit the sack. I'm so tired." He yawned out and gave Poe a sweet, lingering kiss before changing to sleep clothes and snuggling under the covers.
"I'll meet you in a few Finn, I have to run an errand, Mike wanted to see me about a plane."
-The Next Day-
"Did you do it?" Rey asked Finn at breakfast.
"Yes. Poor Mike, I feel so bad throwing him under the bus but a jealous Poe is just so cute."