Is he mentally okay or the issue is on me?

This guy is 38 years old, never had a serious relationship, never married.

I'm in a situationship with him for months.

Yesterday we had a conversation about our relationship.

So he said 'I'm almost 40 years old, I won't change... I want to be free"

He said we have a "relationship" of some sort, but he doesn't want to commit or get into a serious relationship. And it's up for me to decide whether or not I want to continue what we have.

He said "I do give a fuck about you" and that he doesn't want to break whether we have.

What should I do?

Is he mentally okay or the issue is on me?
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