I do not own Duffer Brothers, Stranger Things, or any of the actual characters.
Without any further yada yada yada...
This chapter is disneyprincess315's idea. Sorry if it isn't fluffy enough, but I hope I captured some of the idea you suggested.
Mike knocked on the door, straightening his shirt. Never hurt to take care of the little things around his girlfriend's dad. Hopper appeared momentarily.
"Uh, hi Mike, you didn't get my phone call." Hopper says, realizing the gangly 17 year old still biked everywhere. "El's sick, everyone else got the call, but uh-"
"Can I see her? It's still her birthday, sick or not." Mike says. He's gotten slightly better about managing his nervousness around Hopper, especially when asking things of him. El had said something about Hopper just being a softie when it regarded his daughter.
"Sure sure," Hopper let him into the cabin. Mike looked around, noticing the many tissue boxes and the empty mugs in the sink. "Actually, Mike, do you mind staying with her while I go get some soup from the store?" Hopper asked, also getting better at asking things of the kid.
"Sure." Mike said, shrugging.
"Ok, thanks, El! Mike's here! I'll be back!"
"Ok!" El shouted from her perch on the couch.
"Hey, El," Mike said, sitting down on the couch next to her. El leaned onto his shoulder.
"I don't like being sick." She said in her usual way. "Especially on my birthday."
"That's why I'm here," Mike said, hugging her.
Mike sat there for a while, hugging her, wondering where Hopper and the soup was. He shifted around a bit, and El shifted in her sleep. Mike froze, just realizing she was sleeping. He shifted as slowly as he could, as to not wake his girlfriend.
Hopper came back a while later to find both of them asleep.
"At least she's sleeping," Hopper muttered to himself, sighing, and heading to the kitchen with the soup. He set the bag down on the counter slightly harder than necessary, not enough to wake the heavy sleeper El had become, but enough to wake Mike. Mike, startled out of his sleep, widened his eyes when he noticed Hopper had caught him and El snuggling. Slowly and quietly, he disentangled himself from his girlfriend. Hopper tried in vain to hide his smile at Mike's discomfort. He broke down in silent laughter when Mike's back was turned. Once Hopper regained his composure, he nodded to Mike.
"Thanks, Wheeler." Mike took the opportunity to leave while Hopper wasn't mad at him.
Hopper picked up the phone. "Hello?" He said.
"Hi, Hop," Joyce Byers voice said.
"Oh, hey Joyce." Hopper said, careful to keep his voice down for the chance that the still-sleeping El could wake.
"Nancy Wheeler just called. Said Mike was terribly sick after a visit to your house." Joyce said.
"Ha, serves the kid right, snuggling with my daughter like that!" Hopper shouted, immediately wincing, remembering the sleeping teen. Still he couldn't hold off his laughter. "You should've seen him when he woke up Joyce. The look on his his face when he realized I was back: priceless!" Hopper continued to laugh, Joyce laughing along with him.