Absence makes the heart grow fonder (слэш)

Prompt Fill for ChyaraAStark: I'd like to read a story with Loki and Tony being friends (but pinning for each other like the idiots they are) and suddenly Tony starts to spend less time with Loki. Loki thinks it is because of him, but Tony is avoiding him because he is having a lot of panic attacks or some kind of problem like that and doesn't wanna be seen by his friend and the guy he is in love with (also a God and a Prince, so no thanks) while he's being a useless human.
After some time Loki discovers this and takes care of Tony and they confess their undying love for each other in, also, a stupid way.
:))))
So basically hurt/comfort, angst and a happy ending.