Daniel wasn't big-headed enough to believe he was some kind of blowjob wizard. He put it down to the fact that with Dean's injuries he probably hadn't spent a whole lot of time focusing on self-love, and he hadn't been touched intimately by someone else in awhile. Factor in the part where they both said the L word to each other for the first time and it was no surprise neither of them were lasting very long.
Daniel hummed more in response, taking more of Dean in his mouth until his cock was nestled at the back of his throat.