Anthony Edward Stark

"You've never used those before," Tony said, lethargic and blissful otherwise those fangs might well have caused him to draw back. He actually felt sleepy and it didn't frighten him. That was a first. A slow, tired smile pulled on his lips. "I'm not sure if I'm ready to be the first."

He gently stroked Steve's cheek without meaning for it to be so affectionate and lightly pushed Steve back only to immediately grab onto him.

His knees were wobbly. Lack of sleep and food and now blood had left him exhausted. All in a good way.