I FEEL like I have a lot of empathy for this situation. I was in it years ago however my mindset has changed 360 degrees since I was in this situation.
Think about why you're not bringing this up.
Are you afraid to ''rock the boat''?
If you're afraid to rock the boat that suggests you think you're lucky to have him!
If that's how you think, you can forget it. Game over. Relationship will be on his terms.
If you value yourself and understand that you can walk away and be single and/or meet somebody else, then you won't fear rocking the boat.
Just ask him. Say to him that you can no longer afford to prioritise the relationship if you're not going to be married.
And THIS IS TRUE! generally i mean, and if you have children later.
Honestly, I look back on how powerless I imagined myself to be when I was young with my whole life ahead of me. Why did i think I was lucky to have that bone.
Tell him * ''I can't afford to prioritise this relationship in my life if we aren't a married couple.''
And if he shrugs, from that moment on, de-invest.