This is a catch 22 as they can then use that information to refuse a family visit visa, as the main intention is not to visit family. If you don't tell them it will cause problems with other visa's in the the future as we have seen on here many times.
What you are supposed to do is go and see her!
If you like each other, you then have the proof you have made an effort in the relationship, and apply for a Fiancee visa and get married here, or do it in the Phil and get a spouse visa.
DO NOT try and work the system, it
WILL cause problems further down the line.