The money was given to him over a period of 18 months (usually 2-3 times per month) not all in a lump sum. I don't have any proof that it was a loan. He has no assets at all in either the UK or Indonesia. I basically sent him money every month for him to live off and to cover his bills and rent for the 18 months he was in Indonesia before his job started.
I do have emails where we have discussed him paying me back - is this enough evidence that it wasn't a gift? Also, if we get divorced can I claim a percentage of future earnings as he wouldn't have started his career without my help.
Do you mean proof it was a loan and not a gift?