He's a Red and a Green Flag

We often hear stories of others sharing how Red Flags their partner is, and how ideal their partner was. But what if you met a guy who is both a green and a Red flag? What will you do and how will you handle it?
Celestine is a Senior High School student who has a lot of experience in love. In her past relationship, she settled for bare minimums so she learned her lessons and promised herself to look for a Ideal man that will love her genuinely. And then she met the boy he's looking for, a green flag at first but becoming a Red flag as their relationship goes.