I'm just gonna point out the playlist you made was called 'songs that convey how I feel about you'... so yeah. Also the reception is kinda graceless.

You mentioned things are still pretty early on though. It might be that he's uncomfortable with the romantic messages, trying to softpedal that by changing the songs, and you guys aren't on the same wavelength. Which sucks.

It's your choice what to do and depends on whether this is a pattern of behaviour/there's a consistent one sided dynamic but I'm sure there's a guy out there that would be over the moon to get a mixtape.