He's trying to remember how to breathe when a door to an office swings open and a young man - unkempt, unshaven, looking like he hasn't been sleeping well if at all - steps into the lab proper and freezes. His eyes are first on Steve, his expression feral with hostility, but the second he sees Olivia the rest of the room might as well be empty.

Steve falters, instinct on one hand demanding he stop the other man before he reaches Olivia, on the other knowing that expression well enough to see he should get out of the way.

The latter wins.

Peter stops a fraction from Olivia, feeling suddenly like he's not sure what he should be doing. He wants to just wrap both arms around her and hang on until she makes him let go, but...

-but she's hurt. "What h-" Too big a question. "Are you all right?"