@category12
If a partner has to radically change who they are to be right for you, then you're being unfair to both yourself and them.
This is SO true. Please listen, OP.
When you say you think the change won't come, it's because you know deep down that it won't. He is who he is. He's showing you who he is, but you're not listening.
I am a recovering people pleaser. I spent 5yrs of my 20's with someone who was quite happy to do whatever they wanted, when they wanted and at my expense. The resentment that builds from that is just so toxic and kills any good feelings for the person, stone dead. I did not like who I was afterwards and had to work hard to build myself back up.
I then dated someone for a few months that sounds similar to yours. Mid 20's, still living at home with very dysfunctional family, very "sensitive", working a very part time job to "make space for their music" with no actual future plans that were rooted in reality. I felt like their Mum - dragging them along in my wake, paying for any dates and letting them hang around my flat. It got old HELLA fast. The petted lip and the stomping when I ended it was all the convincing I needed. I had to block when the long-winded, whiney messages started. Well shot.
So glad to be with my DFi now... In charge of their own shit, good moral compass, good job, on the same wavelength with work ethic, view on money, future plans, etc. All evidence-based, and none of that shite future-faking.
TL;DR - work on your boundaries and make space in your life for someone who will treat you properly and be deserving of your time.