Bruce opens his eyes at the sound of Tony's voice and sees his reassuring grin, finding himself comforted by it. He smiles back in return and runs a hand up one of Tony's arms, resting his palm on the curve of his shoulder and rubs at the skin there for a moment.

The sensation of being filled is... not quite what he expected, to say the least. It's not bad, but at the same time its... different, if that was the best way to put it. He decides he'll think about it later, since its not like he's in the correct state of mind to debate on these things anyway - especially when Tony starts to move.

The burn from before still sticks around, slow but steady as Tony makes sure to move gently. Bruce lets out a soft groan whenever Tony happens to brush by his prostate - its only for a few fleeting moments at best, but the pleasure is still there with every brush and Bruce moans whenever he feels it running through his body. He shudders with pleasure at the sensation of Tony's hands on him properly, rubbing at his skin, and the hand on Tony's shoulder scrabbbles to keep a hold of Tony close by as he arches up and moans once more.

"We're not..." he stops for a bit in order to catch his breath, because being able to talk coherently is starting to get somewhat hard. "We're not going to do this all night, are we? My control isn't that good."