Is it bad to get attached to strangers on the internet, PLEASE help me what to do here?

I been talking to a guy on Reddit for weeks now. We don't even know our names, but got our emails, and we been discussing several topics about life and in general online, including the double standards on Reddit in some subs, and we really got along. Its just that he didn't message me since yesterday afternoon and I seen his comments 3 hours ago on a forum. He left yesterday in a middle of a conversation, and i thought it was strange. I don't know what to do now. Did he abandon me?

I feel got too attached because I liked talking to him.

Is it bad to get attached to strangers on the internet, PLEASE help me what to do here?
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