I was married to a woman who was 18 years younger than me. She is the one who always commented that she felt people were looking at us when we went out (in the United States). It never bothered me, and I don't think that it was such a big deal, but it did bother her. It got to the point that I didn't want to take her out anywhere because I wouldn't have to hear her bitch about it. My hair was greyish, and should would demand that I color it so I would look younger, and she wouldn't have to feel embarassed. She was not a filipina.
When I was in the Philippines, I would see old men with very young women,. and it didn't seem to bother anybody because it was accepted and commonplace. I had a young girl on my arm one day as we walked through the mall...she wanted to hold on to me, and I didn't mind it at all. The only stares we got were from foreigners, and not from filpinos. I love the Philippines!