"Bumming" in the US could mean angry and/or depressed, a usage related to "That's a bummer, man," or "I'm bummed out about school right now."
It can also mean borrowing, as in "I been bumming cigarettes for days now," but that makes no sense in context. It wouldn't have anything to do with anal sex.
Love is Enough
, is a sentimental ghost story about two flappers haunting an old theater, and what an aspiring playwright means to them.
My Holiday Contest entry is A Christmas Tart
. It's a tale of true love and blackmail -- oh, and incest, too! Readers say the sex is hot.