Vegas. Heidi and Brent walk around with the money guys and go over the design for the casino. Brent tells her to research some clubs in Europe, since that's the design aesthetic they're going for. I can only imagine how awesome Heidi's research skills are. I'm sure they start and end with Google Image Search, and she'll cut and paste some shitty low-res photos into a Word document and be done with it.

Whitney and Lauren are at work. Whitney sees a dress on a rack and says that it looks like something Audrina would wear. That leads Whitney into asking about the living situation. Lauren says that she barely sees Audrina, since she lives in the guesthouse, and only sees her coming or going. Whitney points out that they might be drifting apart. Lauren says that she wishes she had actually done something wrong, because then at least she could apologize and work it out ,but if they're just drifting apart, there's not much she can do. Yeah, other than, you know, trying to be a good friend. Invite her to lunch, just the two of you! Go hang out in the guesthouse once in a while. Is Lauren new to friendship? Whitney says that Lauren and Lo are more like sisters because they've known each other so long, and Lauren admits that she's not even sure Audrina wants to live there anymore. Whitney thinks they need to talk and find out what's up. Lauren says that she feels like all she and Audrina have in common is that they live together. Don't they have fashion in common? And famewhoring?

Spencer and Stephanie have arrived in Vegas. Spencer gets Stephanie to call Heidi and find out where she is. Stephanie totally does it. Wow, she is the worst friend ever. I would be so pissed. Spencer pulls up at the hotel and just hops out of the car and runs inside, leaving Stephanie to ask the valet if it's okay if she just sits there, because she thinks he's coming right back.

Spencer creepily sneaks into the hotel bar and interrupts their dinner by saying, "Can I have a moment with you outside?" Whoa. He's like the dude from Sleeping with the Enemy. Yikes. Once Heidi leaves, the money guy tells Brent he'll have to find a new project manager. Oh, like Heidi really works there. Outside in the hall, Heidi yells at Spencer for interrupting her dinner because she was embarrassed and it was disrespectful. Spencer keeps saying that he needs to be together with her, and she's too busy to be with him. It's all about his needs. He begs her to come back to LA with him, and we don't hear Heidi's response. She returns to the table and apologizes for the interruption. The money guys leave, and Brent tells Heidi that she needs to get the Spencer situation under control, because it was totally uncool. Seriously. Can you imagine if your ex-boyfriend showed up at your workplace and interrupted a business meeting? Ugh, it makes me sick to my stomach to think about. It happened at one place I worked, where the receptionist's ex-husband was constantly showing up and like dragging her outside to have these intense conversations in his car and she finally had to get a restraining order and get escorted to her car after work every day. In conclusion, ladies? Do not date the crazies.