Buying a house with partner who has no money

ThisIsWeird

Assuming their current 'partner' relationship status is temporary - ie they do hope/ intend to get married or have a civil partnership at some point in the not too distant future - do they need to complicate things until then?

The current situation is that Elbii owns a flat, and has the financial ability to extend this to a house. Her partner seemingly has neither, so is presumably renting. If that situation just carried on as it is, would anyone on here be suggesting they need to write 'deeds of trust' or anything else?

Both will gain financially from him moving in, Elbii's partner in particular. He should be able to save a significant amount each month (assuming he was renting), and this money will be 'his', and - hopefully - ultimately theirs. If things work out great and they get married, that saved money is then theirs. If it doesn't work out, then he's saved a nice sum to get back on to the rental market. He will be no worse off than he currently is, and should be far more financially secure; he will be saving on rent and roughly half his living costs, surely many £100's per month?

Elbii's living costs should also fall as they are shared. But keep the mortgage and deeds out of it until they are married.

I don't see why this needs to change just because she's changing to a house, one that - one day - they will both own together?

I guess everyone needs to consider unpleasant worst case scenarios such as the metaphorical 'bus, so if Elbii wished to write a will leaving everything to her partner so he could bring up baby, that's for them to think about - but it surely has no bearing on their current situation?