what does the bible say from miss my ex?

So... I broke up my relationshio from 6 monts with her like 2 months ago, and this week i dont know why I started to notice so much about her profiles on Instagram,tiktok,YOUTUBE¿?, spotify.. and I think probably her is starting to date with her best friend.

And it hurts me, bc, she and I knows about he liked her and she said things like " i dont care abt that, i only look at him as a friend".

And reciently I saw her profile and she had a reze (chainsaw man) pfp, and i search more information abt that... and wow, I literally miss her.. i dont know if i have to talk with her to she gave my things back... but what does the bible abt my situation?