THIS week has been all about the ‘mo’.

The Fiance, who can barely muster himself to get a haircut most of the time, has embraced ‘Movember’ – where men grow a moustache for a month to raise awareness of men’s health – and now spends an inordinate amount of time looking at himself in anything reflective.

“I just think it’s quite…y’know…sexy,” he says, eyeing his upper lip in the bathroom mirror.

He moves his face towards me although his gaze stays put.

“It’s sort of sophisticated…like Magnum PI.”

I say nothing.

This conversation has been taking place almost hourly since November 1.

He loves nothing more than discussing what shape, length and ‘celeb-style’ he’s going for.

“I like the ‘Johnny Depp’ circa Pirates of the Caribbean,” he muses.

“But do I want it to be more of a handlebar?

“Although I do like the D’Artagnan thing I’ve got going on currently. Maybe I could speak in a French accent too?”

He has also taken to comparing facial hair with other men – and I almost fell off my chair in the pub when I heard him discussing the pros and cons of plaiting or straightening ones ‘tache.

But I have to admit there are some very impressive whiskers knocking about and it is all being done for a great cause.

Last year some 1.1million ‘mo bros’ joined in and raised awareness and around £92m for men’s health charities.

And now we’re halfway through the month my Twitter feed is becoming clogged with people showing off their efforts, meaning the message is being reinforced worldwide.

But The Fiance seems to think I’m more supportive than I am.

“It’s so nice you’re getting into the spirit of it with me,” he says.

“I had no idea women could grow such good facial hair…”

I swing my handbag at him and he grabs his upper lip protectively.

My heart sinks. I think ‘d’Artagnan’ may be here to stay.