Marissa Cooper, lesbian-at-large

So. We haven't seen the episode yet, but what do we think? Is there a chance in hell they portray this realistically? Is it just an excuse for Mischa Barton to make out with a hot girl? Well, yes, but is it anything besides that? This isn't going to be an all-out sapphic affair; it's going to be a girl experimenting with her sexuality a bit. Does Marissa have it in her?