Is it weird for my boyfriend ex to make a new Playlist for him when they broke up a year ago?

Okay so we got together a year ago and I already knew him and his ex had a Playlist on Spotify that they shared. And after he got with me he removed her from everything like social media, number and Spotify. But recently I found out she made a new Playlist for him with his birthdate, like for example #06/15 and all the songs in there are love songs and talking about getting back together and how she misses her "lover". And as the cover photo it's a picture of her sending him a selfie from a long time ago and him saying stuff like there old convo. Do you think that's weird? It's been bothering me a lot and the reason why is because he's with me now and not her. Why does she go this far and do that when they're not together anymore?

Is it weird for my boyfriend ex to make a new Playlist for him when they broke up a year ago?
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