Clementine is a minor character on The Secret Life of the American Teenager who went to the same college as Ricky Underwood, Jack Pappas and Adrian Lee.
Clementine was a former foster sister of Ricky Underwood when they were about 12 years old.
She works at the coffee shop on the college campus next to the library when she's not studying. She reveals that she is a sophomore there, which would make her a year older than Ricky, Jack and Adrian.
When Ricky accidently leaves his phone in the coffee shop, Clementine rushes outside to return it to him, where he is chatting with Jack and Adrian. After noticing how attractive she is, Jack urges Ricky to set him up with her.
Later, Clementine tells Adrian off in regards to Ricky, and Adrian says that she's no longer interested in Ricky, because she's dating Omar. When a pimp walks into the coffee shop and starts hassling Adrian, Clementine helps her and tells him to back off and calls the cops.
At a study session with Amy, Ricky, Grace and Jack, Clementine shows because Ricky wanted her to meet Amy and John at first Amy doesn't want Clementine to come over but she eventually gives in.
Adrian and Jack ask if Ricky had sex with Clementine but Ricky insists that she is like a sister to him and that when they were living together they were young. It is told that in between Jack and Grace's breakup, Jack slept with Clementine, most likely out of vengeance and after Grace realises an embarrassed Clementine abruptly leaves. When Jack is in the hospital recovering from the beating he got from the pimp, Clementine visits him on Christmas Day which helps to build bridges between her and a distraught Grace. While waiting by Jack's side, she tells Grace, Jack and Omar about the infamous Hedy's Happy Holiday House which makes them all want to go and take Jack to see this magical place for themselves. On the way to the car park, they are stopped by a young police officer who after some back and forth flirting with Clementine, asks her out to a Christmas get-together.
In the episode Untying the Knot, Adrian reveals to Clementine that Ricky and Amy are not married and that Ricky can be with her, she is surprised by this and leaves without saying a word. She then writes a letter to Ricky saying she was in love with him and it took her years to find him, and wishes him the best.
She returns in When Bad Things Happen to Bad People where she talks to Ricky about her letter to him, she felt that is was stupid to tell him about her love for him, but Ricky says its fine and asked if she meant it which she says yes. Then Ricky talks to Clementine at the coffee shop, while even though he appreciate that she told him, he turns her down saying they will never be together, even if he and Amy break up, saying it will take years to get over Amy, and wishes to stay friends with her, which she sadly accepts.