Is my husband being two faced?

We lost our house... so I'm living with my dad and he's living with my sister and her fiance. My sister gossips bad about me and he doesn't defend me... he says he needs to keep his mouth shut or he end up on the street. He tells me things she says and if we get into an argument he use what they says against me. I told that it hurts that he's around that... but he's says I'm over the I'm overthinking it.
Is my husband being two faced?
Post Opinion