A typical Philippine woman wants a man who has financially established himself, to the point where he does not need to leave and go to work for days at a time.
Thus a typical Philippine woman may look for a man aged 40 to 60.
The age of partner you are looking for will vary with your personality and culture. Thus we find the “right age gap” to be a number anywhere between 0 and 40 years difference. Yes, a Filipina can be too young to date a foreign man.
Once the lady reaches 18 she may date anyone she wishes.
Expect to get some raised eyebrows if you are 58 and your girlfriend is 18 but it is not uncommon in Philippines.
She wants an emotionally stable man who can handle a relationship without needing mistresses on the side.