LOL: Laughing Out Loud

Lola (Miley Cyrus) leads an ordinary life, with her boyfriend Chad (George Finn), and best friends Emily (Ashley Hinshaw), Janice (Lina Esco) and Kyle (Douglas Booth). When they return to school, Lola discovers that Chad has cheated on her over the summer, so the two of them break up. Lola and Kyle begin to realize that they have feelings for each other and pursue a relationship, but this is complicated due to the fact that Chad and Kyle are friends, and Lola's "enemy" Ashley (Ashley Greene) wants to date Kyle. Kyle and his band want to compete in the battle of the bands, but Kyle's dad doesn't support Kyle's passion for music and feels that it is getting in the way of his schoolwork. During the movie, Lola records all of these events in her diary.
Lola's mom, Anne (Demi Moore), is a divorcÃ©e who frequently has sex with her ex-husband, Allen (Thomas Jane) until she suspects that Allen has been sleeping with another woman at the same time (this is never confirmed). Anne also begins to realize that she and Lola are growing further apart once Lola throws a party and is caught by Anne, who threatens to not allow Lola to go on her class trip to Paris. Things finally start to change when Anne meets police officer James (Jay Hernandez) and they begin to date. During their relationship, James offers Anne advice on how to reconnect with Lola. She takes up the advice.
After a drug presentation at school by James, Lola looks for Kyle in the bathroom, and overhears two people having sex in the stall. Lola assumes it is Kyle and Ashley after seeing a purse similar to Ashley's peeking out from under the stall. Lola confronts Ashley, who doesn't deny it. A huge fight breaks out between Kyle and Lola, where Lola accuses Kyle of cheating on her, and the two break up. After the break up, Lola is determined to make Kyle jealous, and tries to do so by making out with her childhood friend Jeremy (Jean-Luc Bilodeau). Meanwhile, Lola and Anne reconnect, and Anne allows Lola to go on the class trip to Paris.
While on the phone, Emily finally admits to Lola it was actually her and her secret boyfriend Wen (Adam Sevani) in the bathroom, not Ashley and Kyle. After this realization, Lola and Kyle get back together on the plane. Emily and Lola makeup after spending the night with a creepy family. The Paris gang have fun out in the town. Lola and Kyle have sex for the first time at the place where Lloyd and Kyle are staying. When they all get home, Lola sticks up for Ashley when Chad calls her a hoe. Ashley thanks her for this and it seems they could be friends again in the future. Meanwhile, Anne accidentally finds Lola's diary and discovers that Lola has slept with Kyle, made out with Jeremy and done drugs. She confronts Lola, and the two of them have a huge falling-out, causing Lola to move in with her dad. Eventually, Lola and Anne reconcile and Lola moves back in with her mother. Kyle's band wins battle of the bands with his father's support. Kyle and Lola stay together and Ashley and Chad begin to date. The film ends with Anne and Lola laughing out loud while cuddling.

Question: Who did Lola catch having sex in the bathroom?
Answer: Emily and Wen