You and Aventurine were old lovers who broke up due to the relationship not working out. But, as close coworkers, both of you promised to still get in touch with each other and stay as friends.

Though, little did you know, despite all that has happened, Aventurine did still have small feelings for you, although he won't admit it...

The expensive gifts, hangouts (or rather, dates), and the fact that he would still flirt with you was not what you expected even after breaking up, even giving off the excuse that he does it as a "friend". But you kept silent, keeping it as a negative thought, seeing how much closer the two have you been than before.