My wife is actually five years older than me. But we met on a night club and made out before talking too much and it stuck. I think we developed a crush on each other in the ensuing daytime dates, came to admire each other and recognize common values. But we had kissed first and tested the chemistry.
People overthink dating and mating. We'd all probably be reasonably happy on arranged marriages. With apologies for the non-inclusive language of an old song, "woman needs man and man must have his mate, on that you can rely as time goes by".