If your fiance doesn't earn enough to allow you to make a settlement visa application (fiance or spouse visa) he needs to find ways to either meet the income requirement (maybe additional part time job or even change jobs) or to utilise the EEA route. (if that's possible for him)
Alternatively, he can help you in an application for Visit Visa.
Yes, it's tricky and there's no guarantee, but it's very low cost and if you're successful you can visit him here in UK. So it's very well worth the small risk.
karenkeith, why not ask him to join this forum and then he can get all the helps he needs to support your application?
He can also discover if the EEA route to UK settlement would be a viable solution.
Give it try anyway
