he needs to make a will (and so does she) in order to plan for this situation! otherwise, their future could get very messy if either of them passes away while they are together. also, make sure your daughter keeps a clear record/statements of wht she has put into the house (deposit/mortgage payments/bill contributions/car ownerships etc.). otherwise, if they split and there is no paper trail, she or he could be screwed out of the house/money/common property. they should talk about all of this now and up front before anything goes sour - it's not unromantic or hard-nosed....it's called being sensible and watching your back. after all....you wouldn't just wander down the street giving hundreds/thousands of pounds to other people would you? if they don't make this clear now, that is what will happen down the line if things go sour. talk to them both and get them to plan this out properly and legally.