Answer: cuz he loves her unconditionally and is really hard to get over a relationship that was caused by real love, the real love that is so unconditionall that he can’t get over it and will never get over it. That’s why in other words because he loves her so much. It’s a love that it’s so loyal and unconditional that he’s never going to get over it.
Step-by-step explanation:
imagine you love someone like you’re really royal and unconditionally. You love him you really love him but he is really indifferent with you. It’s like I love you but you your feelings are indifference towards me so I will never get over it because it’s real love.
Hope I helped
Bye ✌️