for some reason i don't think that theo is the one w the obsession w his brother, i actually think it's the other way around. theo probably had that broken arm like nick cos he wanted his parents' attention/affection, and maybe nick is obsessed w theo, because no one expected anything of theo, and nick had all the responsibility of being the 'good' son. nick definitely has some psychological issues that seem worse than theo's.
for some reason i don't think that theo is the one w the obsession w his brother, i actually think it's the other way around. theo probably had that broken arm like nick cos he wanted his parents' attention/affection, and maybe nick is obsessed w theo, because no one expected anything of theo, and nick had all the responsibility of being the 'good' son. nick definitely has some psychological issues that seem worse than theo's.