Cillian Murphy & Sienna Miller?

We-he-he-ell, it looks like old Sienna Miller (no relation) is still not a home wrecker. According to Celebuzz, Ms. Miller (not a cousin or sister to any of the YourTango staff) was seen out-and-about with Irish actor Cillian Murphy (pronounced kill-ee-un mer-fee). Sweet, right? He was great in Batman Begins and 28 Days Later made I Am Legend look like Candy Land meets Shaun Of The Dead. What's the big deal, right? Just two attractive actors making it a night on the town, taking in the famous Groucho Club and doing what people do.

Fine and dandy, boyo, but (and there's always a 'but' in Celeb Love) he's sort of married. Since he tends to keep a low profile (and yet we get this news), it’s hard to know what Cillian Murphy has going on with wife Yvonne McGuinness. Maybe they have an open relationship. Maybe their marriage is on a break. We do know one thing, that she has the most Irish-y names we've heard this side of Siobhan O'Shamrock.

There has to be some extenuating circumstance that puts Sienna Miller (we're going to double-check with mom on this one) and Cillian Murphy together. And it turns out that there may be. It turns out that the two are in a little flick called Hippie Hippie Shake. The film (about dirty hippies, we guess) recently finished production, so maybe they're discussing the press tour or something.

Oh God, we hope that's the answer. You'd think that a good lad from County Cork would be able to resist any banshee's song. Although, it may be hard for an Irishman to say no to Sienna Miller (we're hitting a genealogy site after we post this, for realsies), after all it's obvious that she moves in mysterious ways. And she has plenty of time on her hands after getting canned from Nottingham because Russell Crowe weighed too much.

Anyone out there whom we can hook Sienna Miller up with? We only pray that she's never on a set with Brad Pitt. Angelina Jolie knows that danger lies in those hills.

Photos: Splash (on the set of Hippie Hippie Shake)