Gerard Butler cell phone button up starbucks sunset blvd Why so serious, Gerry?

We spotted Gerard Butler getting coffee in West Hollywood on Tuesday, and the 300 actor didn't appear to be in the greatest mood, but can you blame him? He probably needed his morning java fix!

Maybe he had a late night sleepover with the "mystery brunette" he was spotted getting cozy with at Agency nightclub last week?

When you're a hot Scottish stud, it must exhausting romancing the ladies!