Plot

During Valentine's Day, Chandler discovers the miracle of birth seeing an extremely graphic video. Ross hides from Mona that Rachel is now living with him. Phoebe tries to help with Joey's depression caused by his feelings for Rachel.

It's Valentine's Day, and everyone wants to spend it romantically. Monica wonders whether to choose red or black lingerie and gets an opinion from her brother! Phoebe leaves a video tape for Rachel, with a very suggestive title, so she can appreciate the miracle of birth from an extremely graphic point of view. When Chandler arrives he sees the video on the table and reading the title he thinks that is a porn movie from Monica for Valentine's Day. When he sees the video, he is impressed by the scene of a woman having a baby. Meanwhile, Phoebe gives Joey a happy dog for one day, in order to help him with his depression about Rachel's moving. Ross continues to have communication problem with Mona, as she doesn't know that Rachel is living now with Ross. Things got even more complicated when Mona arrives to celebrate Valentines Day with Ross, and sees Rachel quite settled there. Rachel leaves them alone, and goes to Monica and Chandler's department, where she sees the birthing video and concludes that having a child isn't as bad as people say. Finally, Joey decides he will have a serious talk with Ross about his feelings for Rachel.—Alejandro Frias

Joey is still depressed that he can't live with Rachel, so Phoebe gets him the happiest dog (called Mozzarella) in the world to cheer him up. However, Joey even manages to depress the dog so much that he doesn't want to get out of his chair at all, till the point where he thinks that he broke the dog. Rachel on the other end has problems with Ross: she has to watch Discovery Channel all day and Ross making problems of leaving a drumstick in the couch.

It's Valentine's Day, which sadly causes problems for all of them. Ross still has to tell Mona that Rachel is now living with him. When he starts telling her, Mona interrupts him and disapproves the whole idea before he told her that it already happened, after which Ross decides to not tell her yet. Instead, he plans a wonderful evening with her and to tell her at the moment she thinks that she has the best boyfriend. Mona however ruins his plans by coming to his home (she packs him a special valentine's dinner) while Rachel is there and finds it out the hard way. She then decides that she's had enough of Ross' lies lately: giving her the key and then changing the lock, not telling her that he got Rachel pregnant and lying about Rachel moving in with her.

Phoebe gives a birthing video to Ross to pass on to Rachel, but he forgets about it and leaves it at Monica's. When Chandler comes home from work, he thinks Monica got him porn for Valentine's Day and watches the tape, which freaks him out. When Monica shows him that she actually got him porn, on another tape, Chandler isn't in the mood anymore. When he also shows it to Monica, she's shocked too and their Valentine's Day is effectively ruined. When Rachel comes in, they give the tape to her but at first refuse to watch it with her. Rachel finally convinces them to watch it together, when they finally see the end of the tape, where the baby is born and everybody's really happy, though Rachel doesn't agree.

Ross bumps into Joey in Central Perk. Ross is a bit surprised that Joey doesn't have a date on Valentine's Day and asks for the story: Joey tells the story about Rachel, how he likes her a lot, can't stop thinking about her and also how complicated it is with a friend of his who also dated her (so not telling that it's actually about Rachel). Ross asks if the guy is still in love with her (not realizing he's the guy) and Joey replies he isn't. Ross then gives him the advice to talk with the guy, he might be okay with it. Joey then tells Ross that it's about Rachel, ending the scene. The episode ends with Rachel sitting down to watch what she thinks is the birth video but turns out to be the porn movie Monica got for Chandler, though she thinks it's the birthing video beginning with how she got pregnant.