We've been dating for 3 months but he hasn't decided to be exclusive with me and still has his dating profile. Why doesn't he commit?

*he also says there are things in his life he's working on.
*I post pictures of us on social media but he never likes them and also doesn't let me tag him on them.
We've been dating for 3 months but he hasn't decided to be exclusive with me and still has his dating profile. Why doesn't he commit?
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