I won't dispute you...you saw that stuff. Maybe that's a thing for Filipino girls IN the PI. In Alameda, it looked different to me there.
I also saw that behavior or the results of that behavior when I was on a ship in Bremerton by many Filipina wives of American Sailors as well as when I was in the P.I.
My supervisor almost lost his sanity after his Filipina wife stepped out on him while deployed on a WESTPAC. Even got knocked up by her boyfriend and got an abortion before her husband got back. I saw other guys having similar troubles with their wives as well. One poor guy wasn't even certain whether one of his kids were really "his".
More of these Filipina wives of American Servicemen worked in the bars of Olongapo, the Barrio, Subic City, Angeles, etc. than did not. I'd guess that maybe 4 out of 5 of these wives were working in a bar in some capacity when they met there husbands, who probably happened to be a "customer" of the bar in some capacity ;-)
One good thing I did (of a very few) when I was "Station Dito" in Subic was not get married there. I was 18 when I got there and 20 when I left and at the risk of sounding arrogant, I saw right away that it would not be a good idea to marry a bar girl. I was one of only a very few in my small command to both arrive and leave Subic single. We only had about 35 people in our little command and I would say that around 28 - 30 of the guys were married to Filipinas (mostly all bar girls).
We had an old expression about most Filipina wives; "You can take the girl out of the bar, but you can never take the bar out of the girl".