I completely agree with what you've said. I don't think it matters what they call me, she hates that I'm in their life and will always find someway to be awkward. Generally, when she's civil it's because she wants something. I have a feeling it was because he was feeling very unsure as my parents were here for tea, and although they've met them before, they've not spent any proper time with them before last night and he was very nervous and clingy.
