Whoa! Already? Is this a good idea? So many questions!

X17online can reveal Xclusively that Lindsay Lohan and her ex-girlfriend Samantha Ronson had a pow-wow this afternoon at Sam's place! Hmm, I bet they have a lot to talk about, don't they?

LiLo arrived at Sam's Hollywood Hills pad around 1:30 earlier this afternoon, looking somber as she arrived. Our photog described it like this:

"Lindsay was calm but I could tell underneath she was happy. She just didn't want to appear to excited for the cameras. But I know this is what she's been waiting for."

Lindsay left around 7 pm -- it's believed the (former?) couple watched Lindsay's appearance on Ellen together.

Too soon? Maybe they need more time apart before anything can truly be resolved. Or maybe everything will go back to normal now!

We'll bring you more deets as soon as we get 'em!