I never enjoyed being single either. Being alone can be depressing, sad and there are times you feel hopeless. As for preparing for a relationship, I do not know what to do, since I do not have any experience in this game. Just play it by ear, IF it happens.
I don't really have any strategy for that either. I just write my novel as usual.
Are you doing any research for the characters in your novel? Could you incorporate research for your own life into research for you novel's characters? If you have a plot for your novel, could you create a similar plot for your own life as if it were a novel? I know that all of this is easier said than done, but I wondered whether you'd ever looked at strategy for your own life in the way that you'd plan a plot for a book.