The reason he likes sucking you so much is because you give him 11 good minutes of hard, thick fuckmeat to suck on, complete with verbal encouragement and some good hip-bucking too.
He sucks me all the time. I have another guy that does not want to be filmed. I only get sucked by my side guy when his wife is at work. I have another guy that only sucks me when his wife is away. He insist it has to be in a Wal-Mart parking lot. I have tinted windows, not a problem.