What's strange with it?

IMHO the older you get the easier is falling in love. Just because you learn to not be afraid of it but accept it as something precious. Uhm ... yes ... you must think the 'right' way for that and there are many other ways ...

Sex? When you are very young (= below 30 +/- 15 years) your ability of falling in love is influenced by sex, yes. Poor children! Later you may (you needn't) realize that it works the opposite way: The opportunity of getting THE REAL THING in bed depends of your ability of falling in love.

Hmmm ... I'm not yet 100 ... but ... hmmmm ...

Joerg