Sparked by a conversation with DP, I'm just wondering if other people have relationship red flags that aren't actually red flags at all, just silly things sparked by their previous experiences?
When I met DP I was a bit 
that a nearly 40 year old Man with a decent job still has a pay & go phone rather than a contract. In my prior experience that smacks of financial irresponsibility or a bad credit score. I now appreciate that I was entirely wrong and he just gets a better data package that way, and I've dated an above average amount of terrible-with-money individuals.
I know it's inadvisable to project past experiences on to new relationships but I suppose lots of us do it. What is an entirely ordinary / not at all suspicious trait that you see or have seen as a red flag? Or anything you didn't worry about initially that's turned out to be one?