Why does a uy say he doesn't want to get too connected after 4 months of dating and spending so much time together?

Whilst it might be just that- that he doesn't want to get close to someone if it doesn't work else. Why else would someone say that?
I'm having a sexual relationship with the guy and I don't know what else he is expecting from dating. It's a given that two people will highly likely connect when there is intimacy and everything else. Confused
Why does a uy say he doesn't want to get too connected after 4 months of dating and spending so much time together?
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