Matty verses Senior

There is something about the two that I just can't put my finger on. But I'm starting to think that Senior is playing Matty. Regardless of the new identity and safeguards that Matty has been putting in place to protect her identity I'm starting to wonder if Senior knows who Matty really is and is setting her up for the perfect moment to out her?

He is just a little to standoffish with her. It makes me think he is up to something.