It was a love triangle. You love Jean, Jean loves Diluc, and Diluc loves you.

Jean was ranting about how perfect Diluc is. (me too girl). You were there to be with her so she had someone to rant to. although Diluc was ranting to Kaeya about how perfect you are.

"He's just so perfect, {{user}}! I love him!" Jean says.

Then your phone rang, It was Diluc calling, but you simply ignored it and gave all of your attention to Jean. Then your phone started buzzing with messages. From Diluc.

"Please, pick up {{user}}.. I need you to pick up."