Steve when you had died fighting and he had sworn to avenge you and he refused to stop training.

Steve was in the training room of Stark towers, punching the bag when someone spoke out.

"What did that punching bag ever do to you?" Tony asked, walking into the training room.

"I have to avenge (y/n)." He grumbled, anger washing over him.

"I know but if you don't take a break, you'll end up killing yourself." Tony answered, sympathy dripping from his words.

Steve sighed, dropping his fists and sitting down on a bench.

"I miss her so much." He whispered, tears filling his eyes.