Maybe if you're in a life or death situation, and eating spicy food saves you might you make a connection.
Like, for example, if you're swimming in the ocean, and you notice a shark's been tailing you for a while.
You suspect he wants to eat you.
Luckily, you have in your hip pocket a bottle of extra hot tobasco sauce.
So you gulp it down just as the shark closes in for the kill.
You let loose a trail of extra spicy diarrhea right in the shark's eye, causing it to re-think it's plans.
Now the connection has been cemented into your subconscious.
Whenever you get into a tough situation (like you're starting a conversation with an attractive woman) you'll suddenly get an urge to drink some hot sauce and sh*t out some hot love.