If you meet all the strict criteria of a tourist visa it is 'easy', but they statistically have the highest refusal rate of any visa in the Phil.
I never understand why the girls want them, and not a fiancée visa. What are you testing? It can only be the country, as if your possible hubby was decent, he'd visit YOU in the Phil, rather than dragging you half-way round the world.
If after he's visited you, you should know whether to dump him, or marry him, I can't see any middle ground for a tourist visa, unless as I say, you are looking to vet his house, parents, country, etc, which should not have any part to do with a marriage decision.....and this is also along the lines the way the immigration think.