HP: Those Years Sleeping with the Half-Blood Prince

The rating just came out and it's a little low. Hopefully it will go up later.
Main character is the top, Ian Burke x Severus Snape, no age difference (if you have to say, Severus is slightly older), happy ending, sweet, apologies for any out-of-character moments.
Ian Burke, a distant relative of Borgin Burke, an atypical pure-blood, goes to Hogwarts and becomes roommates with Stig.
From then on, Ian started to dart around Little S (at first it was to tutor him in potions, but later... dddd).
One time a day: Help, Severus, the cauldron is going to explode again!!!
small theater:
Anti-spell:
Ian: A spell? Isn't that something anyone can do? It's as easy as pie.
Severus nodded.
Potions
Severus: Anyone can do it (arrogantly)
Ian: Huh? You have hands? That's enough? I can't! Help, my dear Severus!!! (crying)