Via Google:
Operation: True Love follows high schooler Su-ae Shim, who discovers a mysterious, sentient flip phone named Jellypop that tracks the amount of love a person will receive in their lifetime. When the phone reveals her score is a dismal zero, Su-ae teams up with her indifferent boyfriend's friend, Eunhyeok Go, to alter her romantic fate and navigate the heartbreaking betrayal of her boyfriend cheating with her stepsister. As she tries to raise her love points to survive the strange phone system, she finds herself caught in an intense love triangle with Eunhyeok and another popular classmate, Dohwa Baek.
And, hmm, I wouldn’t really say this is much of a love triangle….? She never has feelings for Dohwa. It’s more like he has one sided feelings for her… Anyway there’s a high school bit and now a timeskip bit (the most controversial part of this manwha), and things ramp up a lot. Tbh I’d wait until the story’s end before picking it up. If you pick it up now you’re always going to be left on the edge of your seat wondering what happens next chapter. Ofc if that’s ur kinda thing you can read it now lol

What's this story about? Don't wanna read the comments because of the spoilers (and there is no summary)
I don't like love triangles but I want to read some hetero romance because it's been a while. Or drop some recommendations please (づ ̄ ³ ̄)づ finished stories, better