Look, once and for all, big 'performance' proposals are not 'traditional', They are a modern Hollywood/marketing /social medoia invention. Of course people should enjoy them if that's what they would like, but please don't imagine that it's an old or traditional way to behave.
Proposals from man to woman sort of hovered around in literature from the 19th cent, but have grown out of all proportion in my lifetime. I'm not that old, but none of my friends - and almost all of us have been married for decades - expected to wait around for a romantic proposal from a man. Nor did our parents or grandparents. Instead, like adults, like equals, we discusssed getting married.
Medieval people believed that the birds began to sing - and maybe paired off - on 14 Feb (which, because of calendar change, would have been a diffrent day than 14 Feb today). But that's all that can be definitely proved. Chaucer (14th cent) linked birds pairing off with human ditto, but quite what he meant, historians disagree.
Hollywood so often gets things wrong. Romantic marriage was not a thing until a relatively short time ago. Sure, people loved each other or got to love each other, but all this hearts and flowers stuff is modern invention. Love might happen, but it was by no means always linked to marriage. Hence the plots of so many, many, many early stories and poems.
In the further distant past, marriage was usually arranged by parents, or - among poor/ordinary people - was as much a matter of convenience or even sheer survival as love. And maybe one-third of the time it was forced to take place by the Church and/or social convention because the bride was pregnant.