@Winston
I think this topic has been discussed and dissected countless times, even by real Philippines experts like
@ladislav. I have been in the country for a fraction of Ladislav's time but, from what I learned, it's a very strong and deep-rooted aspect of Filipino culture, to "naturally" extend their hands for gifts and handouts from those they consider more fortunate (at least financially more fortunate).
It's not even a thing with foreigners, as any Filipino who is or has been working abroad can tell you. As soon as a member of the family, or a friend, or acquaintance is perceived to be even just a bit better off than them, any Filipino man or woman, of any age and social status, will immediately feel entitled to ask for help. Favours, gifts, but most of times just plain cash, right here right now!
Of course very few of them muster the bronze face to ask a complete stranger for money, so here's where the warm if sticky friendliness sets in: the guy or girl will be on their sweetest self, adulating your fair skin or pointy nose, likening you to this or that prime Hollywood star, asking all sort of personal questions about yourself and your life abroad. None of any of this chit-chat is relevant: it's but a preamble to the next time they get to see you or chat you. That second, third or fourth time is gonna be where the bomb drops.
Truth be told, most Filipinos won't ask for money for no reason whatsoever. Many of them, especially the scammy girls, will be making excuses, a hospitalised mom or dad, to extort a few thousand pesos to spend on partying with friends (Filipinos love to be generous with other people's money!) or on some smartphone-related gadget. Most of them, deep down, know it's not worth losing a foreigner's friendship (or romantic interest) so cheaply. They will wait for a real "liquidity event" to ask: perhaps when one of their family is really in hospital, waiting for surgery, or when they have to pay for their college tuition and don't have cash, or maybe when someone starts bothering their family for an unpaid debts with knifes and guns.
Either way, it's a big hassle.
The only surefire way I know to shoo them away is to actually consent to a first handout, maybe a modest one, and then take their stance and counterattack!

That's right, you can be the one reminding them, at least once a month, that, as they themselves said, it's just a loan and they need to pay it back soonest. You can tell them that you're short of cash and they need to step in, as the great friends they are (or they say they are) and help back. Of course they may well never step in and give you the cash back, but the constant hammering on the guilt button will give them something to think about before getting back to you for more honey.