Could he be interested..?

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He is around 30 and I am 24. He hosts a show at a local news channel and I complimented him a few times online on his work. He added me on facebook a few days ago and wished me on my birthday. He gives sweet short replies to my comments and criticism. He has called me dear and madam (jokingly) in his replies. He always reads my messages (according to facebook). But we have never actually met.

I am just wondering why would he go out of his way to add me because he is quite famous. He has quite a large female fan base which makes me wonder why he added me to his personal facebook account. His account is genuine though, since he mentioned it on T.V. a few times. Could that be he might be interested? What should I do? I am not yet sure if he is interested in me or not..

Thanks!