My friend says she is thinking of letting her boyfriend move in with her but he will be moving in as a lodger, paying her rent to occupy a separate room in her house, rather than a live in partner who contributes equally to the household expenses. She says this way as he is a lodger, and not a partner, her UC will not be affected as they have the rent-a-room scheme where UC remains unaffected by a lodgers income. So basically her boyfriend is her lodger. Do many people do this?