There are actually two routes you can take regarding your Fake-lover’s awareness of the fake-relationship you’ve drawn them into. You can either be completely open and honest about it—letting the object of your affection know of your interest, with the reassurance that you understand that it won’t happen and you’re not going to push it—or you can behave like a normal person and prevent Fake-lover from knowing about your interest at all costs to save both of you from pretty serious embarrassment. Should you choose the former strategy, just remember not to lay it on too thick. Let Fake-lover know you think they’re really cute and that they’re a really cool person, but that you respect their indifference. Each expression of admiration should be paired with two respecting-your-boundaries comments, just to be sure. And by no means should you ever say anything along the lines of, “if you change your mind.” It’s petty. They already know you’re interested, if they change their minds, they’ll still know where to find you without you coming off as pervy.
Johnny Gall, Hopeless Romantic, Not Just for Masochists Anymore: Tips on Dealing With Unrequited Love