Is my friend a pedophile?

I'm really worried for my guy friend. He's 24 and he met this 14 year old girl, he tells me that she's really pretty and has a nice personality but he won't date her cause she's too young, so I was like ok well as long as you don't try and go for her.

Now comes this month... Last week we went out to eat and he was in the bathroom, I see a text come up from a girl named "Samantha" Now I also have a friend named Samantha which I introduced him too so I thought they were hitting it off pretty good, I opened his phone to text her and joke around be like "damn you like him" and jokes like that. But this "Samantha" Sent a selfie of herself half naked and it's a freaking UNDERAGE girl.
So now I'm getting worried and I scroll up and I see him basically flirting with her, telling her she needs to grow up quicker so they can be together and that he really enjoys her...
I confront him about it and he brushes it off, he tells me that every guy wants to be with a young girl at one point of their life and how age is just a number.
I'm seriously concerned.
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Edit: Talked to him yesterday for 2 hours, he agreed to stop and understood it was wrong. I told him I'll introduce him to GROWN women and he agreed. Also, found the girl on FB, messaged her and she full on came at me calling me a 'bitch, dumbass etc...' Whatever, he promised me to delete her and stop having romantic interest in her however he will still be friends with her.
Is my friend a pedophile?
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