Yes, you really should organize yourselves into some logical order. Beyond that, I really could not care less now about keeping track of his various former girlfriends and love interests and/or crushes. It was only because he was talking about her that any commentary was offered by way of awkward conversation and/or small talk, and even so I have no memory now of who she was or even what was her name. I never thought about her again. Who cares now?