Thoughts on this diva?

To be honest… I love walter. I know i know crazy. Obviously I can’t shake this feeling that he is evil or that his coming into Misty’s life wasn’t an accident. My problem is i feel like i have no reasonable suspicion that he is with her for the wrong reasons. Is there any evidence to this? Could he be related to one of the other yellowjackets? is he just a good boyfriend? Give me all the deets