(+Social, Marriage/Dating) "Even if we don't become boyfriend and girlfriend, let's keep in touch as good older/younger brothers or comrades..." Is it also too much to ask this of just any man?

Back when I was in my 20s and 30s, when I would confess my feelings and get rejected, I would beg the woman to at least stay in touch like that
But even a "third kind of relationship" was rejected.