My partner & I are hoping to buy a flat this year. I have approx £50k while he has approx £17k saved. These savings are to go towards the deposit & closing costs. I managed to save, in part, because I lived with my parents for 18 months. Would it be reasonable to ask my partner to sign a legal agreement that, in the case of separation, we get our deposits back ( and split any equity 50/50). Any other suggestions on how to approach this? If we marry ( as planned) any agreement would be void. Thanks!