the ending

I think that of all people there, the psychiatrist was the only one he ever loved tbh.

I truly think so too. That's why he kept the ring as a memento so preciously. But it feels odd since Clark's affections were not really explored throughout the whole story (or i might have missed it) Kind of hard to imagine a detached character like Clark fall in love. But ofc, i want the best for him too!

A few things that also showed that Clark liked Oliver:
- He's the only person he does keep contact with, even though they broke up (5 times even)
- He seems to be the only one he got as far as exchanging rings
- He was the first and only one he told about his moving
- He never used/manipulated him (as far as I know)
- He pretended to not have received a room refreshner, even though he isn't someone who lies to make someone feel better without second thoughts
- He showed (a hint of) emotions, when he heard of Oliver's death
- He tried to get Oliver out of Alex's sight, to prevent any casualties (even if it was for naught)

I have pointed some of the things out that contradict Clerk's personality. I mean, we do not know anything about him in detail, such as what exactly is wrong with him. But, maybe through his actions and glimpses of emotion-like things that he did or said, we might be ableto get an idea of what his intentions were.
I will try to think about it the next few days. Maybe I can come up with something like a theory :)

You have made some really good observations and points. I want to thank you for being so sweet (and detailed!) with your replies <3

Awww thank you <3

Yes and he keeps and take good care of the fish.
He was truly in love with Oliver and this last panel when he holds the finger... ╥﹏╥
He says to the inspector it was for revenge (with this expression on his face). Good job author !
But I feel sad for Alex too. Because all he wanted was to be loved and never again be abandoned...