I'm not sure I'd classify John as a romantic partner. He was certainly my work partner and the sex was good for keeping him under some vestige of control. Not that the sex was a chore. But John has a small habit of getting addicted to things - alcohol, drugs, sex, murder, that sort of thing. It's always better to keep him distracted. Teeth-faced people? Huh. Sounds like my sort of thing. Also sounds like natives of Justican Six.
Aliens are fairly normal where I came from. Surprise politeness would be a novelty though. Then again, I tend to view politeness as suspicious but that may be a side effect of my job. Polite people are suspicious. I like polite people. They're fun when you flirt with them. They're prone to blushing and that's just adorable.