Marinette simply couldn't leave Adrien's side that night. He looked so weak and vulnerable that she felt bad trying to go home.
He didn't want her to go home either. His tired face was proof that he was not in the happiest of moods. It would have been nice to have his girlfriend by his side to comfort him.
She had come a long way to check up on him. And since Adrien had not been allowed guests, (hence the reason she had to swing in through his bedroom window,) if she left in the morning, none would be the wiser to her being there.
At least, that was their plan.
Marinette put down the bags she had brought with her and walked back to Adrien's bed, grateful that she was already in her pajamas and ready to sleep before she decided to visit. It probably wasn't the best decision to leave the house that way, but her mind was too filled with worry for her to even realize she had done so. She was also grateful for the late hour, though she wished he had slept sooner.
Adrien was still feverish and probably felt more ill than he looked. He scooted over to the far end of the bed, allowing her into his space without getting too close and potentially catching his cold. Not that she at all minded. Then he would be forced to visit her in the night and spoil her.
Marinette pulled the covers over up and fought the strong desire to cuddle up to her boyfriend. It helped that she was tired. She watched Adrien intently, memorizing every detail of his face. With his eyes closed and a sense of comfort on his visage, he seemed peaceful and angelic, despite the occasional sniffle or cough. She adored looking at him.
A small squeak escaped her when his eyes opened suddenly. Blood rushed to her cheeks. She had been caught staring at him. And it was while she was laying in his bed. But he sick, and she was not the type to take advantage of her sick boyfriend, even if he did look adorably defenceless.
To her luck, Adrien wasn't at all creeped out by her staring. In honesty, he was probably used to it at this point. Without saying a word, he brought his right hand up from under the covers and reached out to find her left, gripping it tightly before closing his eyes again. Marinette was thankfully he had gone back to sleep so quickly, both because it was best for him in this state, and because he wouldn't see the raw excitement and panic that was in her eyes.
It took her quite some time to calm herself enough to sleep, and she knew she would regret her fatigue in the morning, but for the moment, she couldn't be happier.
He needed her. Just like she needed him. And she couldn't have wished for anything more.
Author's Note: Immediately following this, I could imagine Nathalie coming upstairs in the morning to check up on Adrien, only find Marinette there and she'd be like wtf how did you even. Adrien, how the fuck did you smuggle your girlfriend upstairs explain thyself(ಠДಠ)彡