Randy is probably related to Ivan Vorpatril, only far less annoying.
Randy and Alia are probably not love interests for each other. It would be too much like incest, even though they're very explicitly only very distant cousins by marriage; they're too much like brother and sister, the give-and-take, without that spark. I thought there would be that spark at first, but it failed to work out. I think that Alia and Drew will wind up together, actually, if there's a romance at all.