Hi there msmaganda, welcome here to the forum.
The UKBA page specifically for Fiance(e)'s is here
Please take a look for the requirements. It's well structured to help you understand what is required.

The key issues in the eligibility of a UK Fiance(e) Visa are:-

- Your Fiance(e) (or proposed civil partner) is currently living and settled in the UK, or is returning to the UK with you to live there permanently.
- You're both at least 21 years old on the date of arrival in UK or on the date when a visa will be granted.
- You intend to marry or register a civil partnership within 6 months.
- You intend to live together as husband and wife or civil partners after you are married or have registered your civil partnership.
- You have met each other.
- You meet the UKBA English language requirement.
- Until you are married or have registered a civil partnership, there is somewhere for you and any dependants to live without help from public funds.
- There will, when you are married or in civil partnership, be adequate accommodation where you and any dependants can live without help from public funds.
- You and any dependants can be supported without working or needing public funds, before appllying to extend your stay as a spouse or civil partner.
Please take some time to review How do we apply for a UK Fiance(e) Visa (in the Philippines)?

Once you have read the information, if you have any other question please feel free to post bthem here in this thread.

Your fiancee (sponsor) will need at least 3 months bank statements and 6 months payslips. Do not supply any bank statements that show overdrawn funds

Good luck with your reading