Having been in that situation before, there's very little you can do about a non-interested or strictly sub party sending you into a sub headspace. It's sort of like the apocryphal "Lesbian Sheep Problem," although we all know how lesbian sheep really solve that one! The best you can do is probably to just try to get over it, because it'll never happen properly.
I'd just get over it
Sigh... I'm there far too often.
?!, who hasn't signed up yet (busy)