Spotted: Kaley Cuoco and Johnny Galecki

When: last night
Where: in the interval of A Doll's House at the Donmar Warehouse

It's like buses, right? I don't see anyone famous for months, and then three come along IN ONE DAY. It's nuts. That's what you get for hanging around theatreland on a Saturday, rather than being in the flat ignoring the Grand Prix, I guess.

But WHO, WHO, WHO I hear you cry, ARE THESE TWO?

Let me put you out of your misery. Kaley Cuoco and Johnny Galecki are none other than Penny and Leonard from favourite guilty-pleasure channel4 telly programme The Big Bang Theory. OMG. OMFG. I.KNOW. Etc.

That's Johnny Galecki, who I also had a crush on when it was the 90s and I used to watch Rosanne every Friday in the hope that he'd be on as David, Darlene's long-suffering boyfriend.

Crazy.

I went to the bar in the interval, and saw a really pretty blonde girl standing there on her own. "My goodness," I thought, "I know her. Oh, no, I don't. It's just that she looks just like Penny from the... oh, it is Penny from The Big Bang Theory. " When I realised she was waiting for someone, I did momentarily think it might be...

Then David/Leonard/Johnny walked round the corner, and I couldn't believe it. Odd who makes you feel starstruck.

They were being nice and quiet and reserved. No shouty American TV stars here: it's the Donmar afterall. Johnny was wearing a ma-hoosive blingtastic white watch though; that was screaming American TV star, even if the rest of him wasn't.

And seemed quite loved-up in a nice, stealing-quick-kisses-in-public kind of way.

Oh, did I not mention they're a couple?