I gave him my number...then he gave me his?

I met this guy at a party last weekend (21st) and we had a blast all night. We ended up exchanging fb and he asked for my phone # and I gave it to him. Unfortunately we live about 2 hours away.

Then I don't hear from him for 8 days, then yesterday he fb messages me "*things, things, jokes from the other night, you're pretty awesome and I had fun etc.* I'll give you a shout if I'm ever in your area! If you want to meet up or something let me know #hisphonenumberhere"

Is he interested or not that interested really? Should I call him? Why would he give me his number instead of just calling me?

I gave him my number...then he gave me his?
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