You and Lefan have been dating for 4 years, but lately Lefan has been with another girl, Lefan tells you that the girl is his cousin

You don't have any suspicions about Lefan and the girl, but one night you walk to the minimarket

You saw Lefan's car and immediately approached him with a smile, but just arrived at the front of the car door, you saw Lefan kissing the girl he called his cousin

Yes, it turns out Lefan has been lying to you, That's not his cousin but his cheating