Bernadette: She can get into any restaurant, but the best husband she can find is Raj?

Leonard: Tam Nguyen?
Tam: Yes. Is my son done with his tour?
Howard: No idea. We're actually friends of Sheldon Cooper.
Tam: Oh, I've been trying to get in touch with him, but I never heard back. Is he okay?
Leonard: Well, if you mean physically, yes.
Howard: If you mean every other way, no.

Tam: So, is he here?
Leonard: Uh, no. He didn't come. He's, uh, he's still pretty upset about ... you know.
Tam: I know what?
Leonard: Come on, you-you must know.
Tam: No, we haven't talked in, like, 20 years.
Howard: Right. Because ... you know.
Raj: I don't think he knows.
Tam: What are you guys talking about?
Leonard: Why did you and Sheldon stop being friends? What did you do?
Raj: And don't worry, even though we just met you, we think you're right and he's wrong.

Tam: Sheldon! So good to see you!
Sheldon: Tam.
Tam: It's been a long time.
Sheldon: Mm, not long enough to erase the sting of betrayal.
Tam: How did I betray you?
Sheldon: You know what you did.
Raj: Uh, let me catch you up. He does not.

Leonard: You know, I was curious to find out what Tam had done wrong. Why am I not surprised the answer is nothing?
Sheldon: So you're taking his side. You scurvy dog. You watch yourself.There is room on my enemies list now that the cafeteria ladies finally told me what's in the chili. By the way, don't eat the chili. Wait, wait, wait. You know what? Do.

Penny: This place is amazing. I can't believe you got us in here.
Anu: Well, it's kind of my job. Usually I get tipped for it, but I'll leave that up to you.

Bernadette: I dunno, I married for love and it turned out ... fine.
Penny: [silence] Oh, yeah, me, too.

Amy: Let me guess. This thing with Tam escalated, and now you're mad at Leonard and looking for a new best friend?
Sheldon: You know me so well. It's too bad you can't be my best friend.
Amy: I can be.
Sheldon: You can't be my wife and my best friend. Who would I complain about you to?

Amy: Just tell me what happened.
Sheldon: Leonard talked to Tam behind my back and took his side. And after what he did to me. Can you believe it?
Amy: No. I'm-I'm shocked and outraged. Now, tell me why I'm shocked and outraged.

Sheldon: When I got accepted to grad school at Caltech, I was afraid to move so far away from home. So Tam said he'd move out here with me and be my roommate. Then, over the summer, he got a girlfriend, even after reading all the pamphlets I gave him about social diseases.
Amy: Aw, I remember when you gave me those pamphlets.

Sheldon: Anyway, Tam stayed with her in Texas, and I had to move out here all by myself.
Amy: That must've been scary.
Sheldon: It was. I was lonely, and I thought I'd never make a friend again. And for a long time, I didn't.
Amy: But then you did. And great friends. If you think about it, if Tam had moved out here with you, who knows what your life would've been like.
[Montage of classic The Big Bang Theory moments with Tam as Sheldon's roomate]

Anu: Come on.
Penny: There's really nothing to tell. Raj is so much fun to hang out with. He's like one of our girlfriends. And I mean that in a good way.
Bernadette: But also a bad way.

Anu: Anything else?
Penny: No.
Bernadette: No.
Penny: I mean, he takes baths with his dog, but not in a weird way.
Bernadette: Or a normal way; they both wear swimsuits.

Tam: Hello, Sheldon.
Sheldon: Hello Tam. Thank you for coming. I just want you to know that, um, I forgive you.
Tam: I didn't do anything.
Sheldon: And yet, here I am, still being the bigger man.

Tam: Look, I was in love with Beth, and she made me happy.
Sheldon: Really? Did she let you play with her train set?
Tam: In a manner of speaking.