The characters:
Sophie - older sister
Maria - younger sister
Edward - Maria’s boyfriend

SCENE 3: MARIA AND EDWARD

MARIA: I am so happy that we agree on this.
EDWARD: Same here.
MARIA: I mean, at this point in our lives, I feel that most people have given in.
EDWARD: True.
MARIA: But we don’t need to. We can resist-
EDWARD: We can.
MARIA: I mean, it will be so much better when we wait for marriage anyhow-
EDWARD (choking): Marriage?!
MARIA (oblivious): And besides we can enjoy all other aspects until then.
EDWARD: Definitely -
MARIA: Did I ever tell you that hilarious story? […] So my dad, and you know my dad, takes me out to lunch. Just the two of us. So weird! We always eat as a family.
EDWARD: When was this?
MARIA: A couple of years ago—I was twenty, I think. He takes me to our family Chinese place and we have normal talk during the meal. Afterwards he says, “Maria, there is something I want to give you-” I am like, “Ok” And he hands me this wrapped package. At this point I am totally clueless-
EDWARD: What was it?
MARIA: A box of Trojans!
EDWARD: What?
MARIA: I know! Condoms in the middle of Oriental Express!
EDWARD: So . . . . what did he say?
MARIA: He said, “Now Maria, I know you are now of the age-” And before he could go
any further, I burst out laughing. I was like “Dad, you know I am not having sex.” He looked shocked. Crest-fallen. I had to explain to him that I am not like Sophie and I am waiting till marriage.
EDWARD: So you had decided that then.
MARIA: Oh, I’ve always known that.
EDWARD: Oh.
MARIA: And besides, ewww, sex is gross.
EDWARD (lifting an eyebrow): It doesn’t look gross.
MARIA: Look gross, Edward? What do you mean? Oh my god, you have looked at porn,
haven’t you?
EDWARD (looking defenseless): Um, well, yeah, ever since I got a broadband connection - what’s wrong with that?
MARIA: Oh my god. (Getting increasingly upset) Oh my god.
EDWARD: Maria, most guys-
MARIA: I can’t believe this!
EDWARD: What?!
MARIA: You’ve cheated on me!
[…] Lights down.

SCENE 4: SOPHIE AND MARIA
[…]
SOPHIE: Are you in love with him?
MARIA (stumped): I-I think so-
SOPHIE: I have heard you say “I love you” to him on the phone.
MARIA: We do. We say it.
SOPHIE: Do you mean it?
MARIA: Oh come on, of course.
[…]SOPHIE: Have you guys finally slept together?
MARIA: Sophie!
SOPHIE: What? This question is very relevant-
MARIA: Of course not, geez.
SOPHIE: Have you never been tempted?
MARIA: No! You know how I feel about this. Sex is gross.
SOPHIE: You should definitely break up with him.
[…]MARIA: You know I don’t respect your selfish behaviour and destructive lifestyle-
SOPHIE: Thank you, Maria, thank you.
MARIA: So if this talk is going to turn into a sermon about how I should jump into bed with Edward, or anyone for that matter, especially if he is, say, twenty years older than I am, black, bisexual and has a career in adult films - well, I don’t want to hear it.
SOPHIE: Who said Pornstar is black?
MARIA: My point is, you are attracted to men in high-risk categories.
SOPHIE: Or bisexual for that matter?
MARIA: How do you know he isn’t?
SOPHIE: Or in pornos?
MARIA: Hey, you yourself said you think you saw his picture on one of those Porn
for Women websites—why you even look at that smut, I don’t understand.
SOPHIE: Oh, don’t tell me you’ve never been curious, Maria.
MARIA: To see nudity all I have to do is look at the works of Michelangelo.