My friend is a bit depressed because his girlfriend has just been admitted into a psychiatric ward.
That's a downer for anyone but in this friend's case it is the fourth girlfriend in a row who has had mental problems.
My friend is beginning to worry that he is is subconsciously attracted to, well to put it delicately, loonies.
As he says, how can he tell when he first meets a girl, that in a few weeks time she is going to start calling him Daddy, eating uncooked rabbit foetuses and wearing underwear stolen off her neighbours' washing lines.
He's considering asking all future prospective girlfriends to take a test to prove they're not mentally unbalanced.
But I pointed out that the sane ones will think he's the one playing hopscotch with the fairies.