Hello Andy, welcome aboard Filipino UK

Yes, there are many challenges to face and often with some 'bumps' as you've already discovered.

There's plenty of members here who have been along the same path and can share their experiences to smooth the way.

Applying as a Fiancee is principally the same as Partner/Spouse but there are some important additional issues to prepare.

Take some time to review this forum thread:-
All New Guide - How to apply for a Fiance Visa

Many couples find it tricky to show 'intention to get married'.
UKBA don't say much about this but here's what they do say - What evidence is required of marriage arrangements?

Not very helpful.

To be honest it's very closely connected to the relationship itself and if the ECO believes it's genuine and subsisting
If they believe the relationship is genuine then they usually believe a marriage will take place.

Of itself, any kind booking at a Register Office or church is not proof that a marriage will take place.
However the ECO can reasonably expect that couple will have made some tentative plans for the wedding.
Any evidence at all, however small, that's available to show that wedding arrangements have been discussed / shared or are in hand will help in this respect.

Think about including any facebook messages, e-mails or texts that specifically refer to wedding plans:-

- Where and when
- Rings, dress, cake, catering, reception
- Guests, invitations

Also try to establish a communication chain between you and the registry office inquiring about setting a wedding date.
Give them when you intend to get married and they will tell you that you both physically have to be there to set a date.
Reply back for instructions and info and they will email you back a price list and what you have to do. Could all be done by e-mail and invaluable as documentary evidence.