A heartbroken woman seems poised to break someone else’s heart in a new trailer for “Clementine.” Devastated by her older, more successful girlfriend’s decision to break up with her, Karen (Otmara Marrero, “StartUp”) leaves LA and heads to the Pacific Northwest, where she breaks into her ex’s vacant lake house. Karen passes the time hanging out with Lana (Sydney Sweeney, “Euphoria”), a mysterious teen she finds herself drawn to.

“You should be careful,” Karen warns Lana. “There are people out there that will take advantage of you if you let them.” Lana seems to realize that Karen may be one of those people. “You’re going to break my heart,” she tells her.

“The film is ultimately about the cyclical nature of relationships — how we can be hurt but then go on to hurt someone else in almost the exact same way,” writer-director Lara Jean Gallagher told us. She revealed, “I had a relationship with an older and more successful woman that ended in a breakup that completely floored me. As I got closer to the age that she was when we started dating, I found myself more interested than angry about the experience. ‘Clementine’ is definitely working out a lot of tangled feelings about being dumped. She’s dealing with her sense of self-worth — or lack thereof — when dating someone older and more experienced, as well as the haunting and wily subject of age.”

Gallagher wanted to tell a coming-of-age story, “but in a way that’s more mirror than growth,” she explained. “I guess I’m interested in people taking charge of their own coming-of-age stories, deciding how they want to be and how they want to grow.”

“Clementine” arrives in virtual theaters tomorrow, May 8.