There is no common law marriage in California, so that worry is out the window.Second, 6 months of dating honestly is not long at all, so the very logical side of me can't help but understand that you might want a written lease.

There are plenty of circumstances where renting is just the logical option.

And I think if you think of something like that logically - even if "everyone" says it's "standard," does it seem crazy to you?  

Still don't know how I feel about it but that would be the logic to follow

Make a logical, well-thought out decision and not an emotional one. 

I don't think you understand the logic.

It's logical and reasonable.  

I understand the logic that rent is paid, but the tenant still has utilities, food, clothing and other expenses.

I ask where they've seen the bed bugs so I can come and inspect and they claim that such a question is proof that I knew of the bed bugs...After going around the world with this guy to explain that this is a normal troubleshooting step, identify where they've seen them so I can come and look, he claims he only responded with logic and that I'm wrong....Then he sends me another email telling me I'm being volatile and defensive...Then this beacon of logic asks me at 10:00 PM what time in the morning the exterminator will be by.

I can't thank you enough.I've got to say, much of what was said seems logical and on par with my thinking.