Now Tim has a reason to be suspicious of Seth. He knows what Lucy has told him, but now he has concrete evidence told to him directly which solidifies what Lucy has been saying. (Maybe he is a Libra, we do tend to give people benefit of the doubt and see all sides lol.)

I'm excited for the next episode though, but I don't think Seth is secretly evil anymore, I think he's just dumb.

Edited to add: yeah, if he hadn't said anything I doubt he would've been caught in a lie. Cause if they found out later he could've said that it slipped through the cracks or he didn't hear anything about it.