<prompt> Human: Hey all,Ive just been scouring this sub and cant seem to find what Im looking for, so hopefully you guys can help me.In brief, my partner and I live in the UK, as does his mother. Were not married, but are heading down that road. His mother is in a bad financial state. No debt that I know of, but low income. Not on benefits because she is not a UK citizen she is EU and thinks claiming benefits will hinder chances of claiming citizenship not sure if thats true?.She is one of those people who has many ideas about what theyre like to do, courses theyd like to take, businesses theyd like to start... but nothing sticks. In the meantime, it is because of my partner that she has been able to live in the flat she does. He recently approached me saying that his mother has expressed a desire to own her own home and is looking into the government Help to Buy schemes like the ISAs and so on.To cut to the chase, my questions for any of you who might know how British finance works are:- If he used a help to buy ISA on a house with her, would this restrict me from being able to use mine on a house he and I may buy in the future married or not?- Will any debts he enters into with her ie acting as guarantor affect me and my credit if we were to be married?Thanks guys, really appreciate any help.  <response>: You could also ask in rUKPersonalFinance 