Lindsay Lohan reportedly stormed out of Brittny Gastineau's birthday party earlier this week after a confrontation with an ex, Courtenay Semel, according to the NY Post.

A source said, "Everyone was trying to keep [Lohan and Semel] apart, especially since Courtenay is recently out of rehab and has pleaded with Lindsay to do the same.

"Everything was fine for a while, and Lindsay seemed happy, but then there was a confrontation when she came out of the bathroom, and she ran out in tears. Everyone fears she's on some kind of self-destructive collision course."

When the Post contacted Lindsay's rep about the incident, the rep only said "That's news to me," while Courtenay's rep did not return calls.

The evening about Brittny's birthday party, Lindsay reportedly was out partying with Stavros Niarchos until 7 am. It doesn't sound like Michael Lohan's concerns about completely unfounded, but his tactics are still far more detrimental than helpful (even if they are profitable for him).

A Beverly Hills addiction counselor had this to say about Michael's attempts to get Lindsay to return to rehab:

"Her dad is putting her in a scary situation. Getting her into rehab should be done quietly with love and respect, not by public criticism. He is just forcing her to rebel, and it's just a time bomb waiting to happen."

That makes complete sense to me. Hopefully this situation won't get any worse.

Photos by Wenn.com