This is nice in sooooo many ways! I love how mind-opening Harry and Severus were once they were able to talk to each other at the age of peerage. And I also loved how Harry's getting over himself was almost a convulsive, knee-jerk thing that snuck around him from behind.
Although Harry's nagging a reluctant Severus for underage sex is a trope commonly used in Snarry, I still found it charming in this story. And yes, the 'hey-we're-both-not-dead-let's-prove-it' sex was a wonderful release.