Your Immigration Expert
South African Partners UK Visa
It is lovely you found each other again. From a UK immigration perspective, it is always advisable you check you can meet the financial requirements to bring a person to the UK as your partner or spouse. You will need to earn over £18,600 per year, which currently prevents some 40% of couples from being able to apply to live together in the UK.
If you are financially stable then I would recommend you marry prior to applying for a visa in South Africa and wait for the marriage visa to be approved before coming to the UK. I have written extensively about UK spouse visas on this site and I hope you can find the general information you are looking for. Once you apply, I am happy to help you address any specific questions which may arise.