Ok listen. Joke met Jack and they had ONE flirty conversation in a bar and that was enough for him to fall in love with the dude. After a series of well meaning but ultimately stupid choices, Joke ended up turning himself in to the police so Jack wouldnt take the blame for the bank robbery he commited. Let's keep in mind that this was after only knowing Jack for very little. He then spent 5 years in prison thinking of all the ways he could apologize to Jack and even wrote a list, and he also got tattoos dedicated to Jack. When he got out of prison, the first thing he did was look for Jack and did The Most to get him to forgive him. When Jack finally forgave him, he did everything he could to help Jack achieve his dream of opening a school for underprivileged kids. When Jack's grandma got sick, he swallowed his pride and asked his dad (a doctor, who was been nothing but an asshole to Joke his whole life and has basically traumatized him into feeling worthless and undeserving of love) to help Jack's grandma. He has both explicitly said and proved that the would do ANYTHING, even risk his own life, just so Jack could be free of the mafia boss that he works for and be able to live the life he wants. The way he looks at Jack with so much love and longing!! That man is so DEVOTED to Jack it's honestly insane. If this isnt being whipped idk what is