Seamus' breath was coming fast as he stayed still, both to give Justin a chance to adjust and to enjoy the grip of Justin's body around him. He shivered as he pulled out and ran both hands flat up Justin's chest. He curled a hand around Justin's shoulder for leverage and then thrust back in with a long moan.
His attempt to set a rhythm of slow strokes periodically slipped into something faster and harder before he got a grip again.