Hi,


"You and your unmarried or same sex partner must show that:

any previous marriage, civil partnership or similar relationship, has permanently broken down
you have been living together in a relationship similar to marriage or civil partnership for two years or more
you have suitable accommodation which is owned or lived in only by you and your household, and where you and your dependants can live without any help from public funds
you can support yourselves and any dependants without any help from public funds
you intend to live together permanently
your partner is not under 18, and
you are not under 18.

The Entry Clearance Officer will need to see evidence of a two-year relationship. This may include:

documents showing joint commitments, such as bank accounts, investments, rent agreements or mortgages
letters linking you to the same address, and
official records of your address, such as your National Insurance card or health card.

At first, you will be allowed to stay and work in the UK for two years. Near the end of this time, if you are still partners and intend to continue living together, you can apply to stay permanently in the UK.

If you and your unmarried or same sex partner have been living together outside the UK for four years or more, and they have been a British citizen for four years or more, there will be no time limit on how long you can stay in the UK.



Sorry I do not know much about it,these are the rules.People tend to go for fiance or spouse visa.The one above maybe tricky to obtain in your case.