After I swallow, the first thing I want to do anyways is brush my teeth. So that's what I do. We've talked about it though, he has no problem with a quick peck but doesn't want his tongue in my mouth after that. I wouldn't want my tongue in his mouth after he went down on me, but I'd give him a quick peck too so I get it. If you find it disrespectful though, talk to him about it. Communication is key in relationships, ESPECIALLY when it comes to sex.
That depends all on your definition of "love genius". Most things in relationship and sex are common sense though. Honesty, communication and trust are main components of relationships. I just follow that and the rest seems to be good.