Well yea but they gave me a cool +1 sword that whispers cool things to me so im not complaining

No, not even a little aroused.

Okay, to be fair I genuinely asked my players this exact question after my last session where they teamed up with the “Totally Not Helldiver Vampires” and got a response that they all knew these guys are sus. They just want to wait for the inevitable betrayal first.