After re-reading the comments... I actually feel sad. Seriously, look at how happy and excited we are that they had sex. It's not even some perverted excitement, it's just the simple fact they ACTUALLY did the nasty with no bullshit, no dumb drama that happens in Jousei, shoujo's, etc. Just two lovable (although loud) idiots that love each other naturally progress to the point all couple's do without anything unnecessary in between.
I'm laughing on the outside since it's so damn funny, but on the inside, it's pretty sad we need to have dragon balls to get some actual progression for our characters nowadays.