He said he loves me - but now acts distant?!

OK this man told me he loves me, I was so happy I cried. He seemed very happy too. But now all this week after he acts distant all of a sudden. I mean he talks to me and is friendly ..but he acts shy and ..well..distant. I'm so confused, what to think of this?! I Haven't been clingy,needy,nothing like that. and he told me he loved me first. We been dating 4 months. Help
He said he loves me - but now acts distant?!
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