Sterek.

stiles said, 'hmm, baby you gotta try this blueberry french toast!' then he lifted up his fork and practically forced the sweet food in derek's mouth.

Stiles: yeah.

And in private they were sneaking glances and staring at each other like this

And being vulnerable with the other.

Especially the dream scene, you see how scared and gentle Derek is when he thinks it's just the 2 of them even if it just a dream.

Considering this was Derek's reaction to Stiles putting his hand on him just 1 season back:

In season 1, Stiles was grabbing him to stop him, which is a way of controlling him. Derek looks confused and threatening until Stiles takes his hand off, but there’s also a hint of panic in his eyes which could be covered up by the shock or confusion. But knowing Derek’s past, you can understand why being grabbed, restrained, or controlled (especially by a human) is enough to scare him or make him angry and defensive.

In the hospital (or, rather, the back of the ambulance), it’s gentler. It almost seems like an accident that Stiles touches his arm, but it’s not. He’s not grabbing him to stop him; quite the opposite—he’s reassuring him that he can go and that his sister will be safe with Stiles. Derek doesn’t pull away or try to intimidate Stiles into letting go; if anything, he keeps his arm outstretched as if he wants Stiles to keep reassuring him, but the situation means he can’t stay.

The last one is after Liam wolfs out a bit. In that one, Stiles’s grip is a little tighter, but it’s not aggressive: it’s protective. And you can see it in Derek’s face that he’s confused about why Stiles would choose to protect him instead of diving the other way to protect himself. But as Stiles lets go, he doesn’t pull back, he lets his hand fall down Derek’s sleeve, reassuringly. Partially for himself (as you can see by the look of panic on his face) but also for Derek, like in the back of the ambulance, he’s letting Derek know he’s okay and they’re safe.