How do I know if the guy I met online is for real?

So I met this guy and he gave me his number. He seemed pretty cool so I started texting him. We've been texting for like a week now. He keeps asking to swap pics with me and I keep stalling cause I wonder what he really wants from this? Like does he really want to get to know me or just judge if... Show More

I haven't met this guy in person.
I don't plan on meeting him in person. He's in a different state then me anyway.