I think my Brother in law is attracted to me?

Anonymous
Ok.. So my Brother in law and my Sister has a fully mentally draining relationship going. Not cooperative, both at fault wronged relationship that has just gone of the rails lately. This has made him appreciate me a bit more for the traits I have, and not have like my Sister. Me and my Brother in law is very close, and we spend a lot of time together. I think he often imagines how life with me could be. He has expressed out in the open that he picked the wrong Sister in a joke. But there is a hint of serious to that joke I sense since it is going that bad between them. When he's drunk he gets a bit more physical, and expresses appreciation verbally a lot for me. Should I be worried?
I think my Brother in law is attracted to me?
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