My husband resents our son

My husband and I got married just after we both completed college and it has been a great journey so far. We have teenage twins, a girl and a boy. However, my husband has always had a soft spot for the girl and doesn’t seem to care much for the boy. The girl performs well and is always topping her class whereas the boy has some challenges. I’ve tried to talk to my husband about going easy on him but he insists he needs tough love. The thing is, this boy is acting rebellious now and comes home late, drunk and completely out of order. They almost got into a fight one night and my husband had to lock him out. He didn’t come home for two days. I was worried sick. My husband ignored and said he didn’t care if he came back or not. I think he is just desperate for his father’s love. What can I do to bring them closer? How can I help my son realise that his rebellion will only bring him problems? He is close to his sister, so I’ve tried to ask her to talk to him but he always changes the subject when she does. Please
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