X17 XCLUSIVE - Is Lindsay Stalking Sam?

Last night, Lindsay Lohan went to a party on Blue Jay Way in the Hollywood Hills, but apparently the soiree wasn't all that amazing, because Linds headed straight back to her house. However, instead of brushing her teeth and slipping into some PJs, Linds left her pad around 1am and drove over to Samantha's! Of course, Samantha wasn't home - we caught up with the DJ at The Bar on Sunset, and a source inside the club tells X17online exclusively:

"When I walked inside, I spotted Samantha chatting it up with two girls - one blonde and one brunette. It seemed innocent enough, but this is just the kind of thing that would send Lindsay over the edge."

Being the sneaky little stalker that she is, Lindsay found the bar that Sam was at, and after waiting by Samantha's black Porsche for a few minutes, Lindsay (well, the girl driving the white Maserati) sped off and drove back to Samantha's house. After waiting for a short while, Samantha finally pulled up into her garage, and Lindsay hopped out of the car and headed straight for Sam's door.

It would seem as though the girls had a nice little sleepover, but what's with all the awkwardness? I mean, driving up to the bar, stopping by her house...it's almost like Lindsay didn't even know where Sam was, which would lead us to believe that Sam didn't TELL Lindsay where she was.

Is Sam just letting Lindsay spend the night because she feels sorry for her? I mean, if Sam really wanted to hang out with her, don't you think they'd be coordinating better?