This was getting tiring now. The pegasus continued putting puff after puff into the much fuller mare underneath him, even as his chest was starting to ache from the repeated deep huffs. Forcing one last, long puff into the mare, he broke the kiss, moving back and panting heavily, trying to catch his own breath. Her large airfilled form squished and bulged under his weight, squeaking slightly… though, as he finally found himself breathing normally again, that squeaking started to merge into a more… vocal sound.
 
“Heh, my, help a mare catch her breath so much that you end up needing to catch your own?” The cellist let off a light giggle as she saw the pegasus above her panting heavily, a very surprised look forming on his face as his eyes focused on hers. Her hooves squeaked against the rubber of the back door as she shifted them slightly, their airfilled forms making mobility a bit difficult - not aided by how her swollen flanks were pressing into the sides of the room now.
 
“You… you… you’re awake? Oh, good, I was worried… whuff…” The pegasus let himself flop slightly against her inflated belly, taking a small rest. Considering how close the ceiling was now… he certainly was getting a good work-out pushing so much air into her. Had to be, what, half the space in the carrier already? Sheesh. “I… s-sorry for filling you up so much, I-I was waiting for you to gimmie a poke, or something…”
 
The cellist only giggled at that, her chin pressing against the bit of soft, squishy chest squished between the pegasus’ forelegs. “I figured as much. Don’t be sorry, though, I know you were waiting for that. At least the last few minutes, anyhow…” A soft blush met her cheeks as the pegasus lifted his head back up, looking down at the cellist in some surprise. She turned her head to the side, squishing her inflated foreleg into her swollen belly. “…and, just to be clear… I still haven’t given it yet%”
 
The blush on the pegasus’ face grew brighter, his mouth slightly agape. He didn’t need to say anything else, though - all he had to do was take in another deep, deep breath%