It's a cliche, but it's really one of those things where you just know when it happens.
After siring 20 children I better be really in love .
the way you look at the person, how you feel.
When your Girl Friend tells you are and you're still too young and stupid to know that bumping uglies, daily, nightly, ever so rightly, does not equate love.
What's more important is their happiness
When the condom breaks you don't care..
When you are throwing up.