Similarly, if I like someone and they like me too, most of the time I don't wonder about it, I know. So if I'm still puzzled as to whether they like me, then it's because they don't like me, but I'm trying to read non-signals as signals.

Maybe you're overoptimistic, and try to "read non-signals as signals" but other people might be under-confident and not see signals which are there because they have difficulty imagining that someone could like them.

Of course, if you are even remotely credence calibrated in this matter, then uncertainty signifies ... uncertainty.