If you could decide, How and why should a couple fall in love?

I think it really depends of the situation and the people. ;)

Why a couple fall in pag-ibig is c=because of the charackter of the other person. That should be madami important than the body or something else. But there must be an attraction or it wouldn't work ;)
How... I think the most romantic thing is a pag-ibig that grows out of a long friendship. They just know that they are the best mga kaibigan and that there is madami and madami things they pag-ibig of the other person. :)

So I think that is a kind of answer you expected or did I understand it in a wrong way?

the most meet physically or through any means of communication. they most learn to pag-ibig each others character, they most learn tolorate each others faults, appreciate, resect and be attracted to each other.