The sex felt wonderful while it lasted. Steve has shared such physical pleasures with other people before, mostly dames and all of them after the serum when none of his physical issues would cause problems. He had not missed the way his body almost betrayed him that last moment; he doesn't think he'll ever be look at anyone in the eye if he actually blacked out in the middle.

"I'm...good." He said in between wheezes, only absently noticing that Bucky has also released, feeling warm liquid splashing against his belly and shirt. The movie in the background was just white noise, and Steve could only feel the beating of Bucky's heart underneath his cheek resting against his friend's chest and the hard sound of himself trying to get enough air inside of his own lungs. "I'm...good." It wasn't quite a full asthma attack yet but it was close.

"You're...calling me Stevie..." He's not even sure Bucky realized he's using that old nickname though he supposed his current appearance might have brought back some those old buried instincts.