LOL. It does, in many aspects. Do you need me to teach you about pyschology?? It is clear yo don't really know about psychology much and just some random facts about it??? The context is much deeper than what you sea on the surface, you see. Human mind, feelings, emotions are very complicated and sometimes twisted.
And the thing on "it's not Hyun's duty to be his psychologist", very wrong. It was Hyun's choice to be by his side because he cares for him. He is not trying to be his "psychologist" per see. Have you heard of someone you can lean on? Hyun is trying to be that. He wants Jaeha to depend on him, because he likes him and cares for him. Of course you'd want the person you like and care depend on you, right? That would be the biggest reward. Being needed and wanted. Being depended on....I hope you understand that.