"Radisq's eyes popped open and widened as a stretching feeling seized him. Dragging his eyes down to see what stretched him, he watched with fascination as Aaeren held himself above him and slowly pushed his cock into his body."
Aaeren didn't push his cock into his own body, though that would have been more fascinating perhaps. Radisq had to look to see what stretched him? Or he just wanted to get a look at what was stretching him? I don't know...it reads...oddly...no?