I'm catching feelings for my ex's brother.

My ex was abusive as fuck and is now in prison. His brother has always been there for me throughout our relationship. I was living with him and my ex but now that my ex is in prison, it's just me and the brother and we've actually started hangin out. I'm really falling for him. He is soo good to me and i can tell he likes me by the way he smiles at me. This sucks so much. We cuddle and watch movies and stuff but deep down i know it probably could never be anything serious 😞