Warning signs of what? Stalkerishness o.o?
be very careful
I would never meet up with a guy who I didn't know because what if they are some crazy person. Can't you meet people in your own area? I am not one to be scared of people at all, but I don't think I would even text some random guy if I were you. There really are no sure signs that someone is bad, because they can just lie and act like a totally normal person, so there really is no way of telling for sure. I mean this guy probably isn't some type of crazy person, but is it worth that risk?
If the activity is "texting long distances"! That's a big no no...
Being self-absorbed is never a good sign, like the guy I am currently texting with, he's very me,me,me!
Don't fall head-over-heels until you've met face-to-face.