@weirdwriter@romancelandia Yes, my main pair are kind of "insta" but it becomes clear over time that they were both READY for it.
The main driver in romance is receptivity, IME.
One is vastly experienced yet bored. The other is sheltered but has been watching him for months. If they weren't compatible it wouldn't work, but they try it and it does.
Also one is a field agent with "high turnover" who has no time to lose. Other chars call him on this, he dun care. It's new to him!