We have been together for about 18 years (of those married for 13). My x2b moved in with me and brought nothing except for his personal belongings. I owned a fully equipped and furnished 3-bedroom house, and didn''t agree a pre-nup at the time. My question: although some of the items have been replaced and others have stayed the same over those years do I still have a right to claim that these are "technically" mine? I do not wish to sound petty but just want to know from a negotiation perspective when we get to mediation!