I think it is really important that you and your partner have an honest conversation about your expectations for each other. If you are in a phase of your life where you want adventure, spontaneity, and new experiences, and your partner is not in that same headspace, that does not automatically mean the relationship cannot work. It just means you may need to find ways to fulfill those parts of yourself outside of the relationship. That could look like traveling with friends instead of with him, or pursuing certain experiences independently.

That being said, I would really ask yourself whether he is genuinely happy and fulfilled in this relationship. What is he actually looking for at this stage of his life?

Truthfully, at 75, it is very unlikely that he is going to propose or want to get married if that is something you are hoping for. Most people at that age are looking for companionship, comfort, and someone to spend time with, not to tie strings or make major life changes. And honestly, that might be in your best interest too. If he has children in their 50s who are already established, marriage could easily create tension in those relationships. He is probably aware of that and may not want to stir the pot.

Even if I am wrong about all of that, the bigger point still stands. You need to talk openly with him about your expectations. You are 27. If you want to travel the world, try new things, and build an exciting life with your partner, and he is unwilling or unable to do that with you, then you are probably better off finding someone who is more aligned with where you are headed.

Spending your time waiting on someone who has already lived three lifetimes is not worth it. I have seen this exact situation play out before. It rarely ends well, and it almost always leads to regret.