Eremin Slowburn with my favorite trope of all time, Practice Kissing. Chock-full of tooth rotting fluff and panicking gay boys. Some angst may come, and I promise it's all worth sticking around for. This story is also on Ao3 under the username "Chrollophobia" if you'd like to check it out. The tags on that site might also give you a better description of the story.