This is the specific mechanics of what it means to both be confident in approaching someone you’re interested in, and to not be weird or entitled about it. Be interested in them, appropriately, but more than you need to be. See if they take an interest in you.
I think I know a good way to spot “the spark”. Whatever that is. Like, I think I can point to the qualia of potential for true love (which is grown, not discovered, but which is grown most sweetly and purely in this soil).
It’s when your self-consciousness steps out of the way.
One option you can and likely should take advantage of, once you feel this social terrain makes some sense, is to make bids that are in a range that is greater than _expected_, but still falls in the range of _acceptable_. This is not complicated and basically eliminates risk.