Is this guy a predator?

So I've been talking with this guy for a while, and he's super sweet and nice to me. He's like in his twenties or something though, and recently asked for my picture. I had my friend look at the messages, and she told me not to send the pic, but I did anyway. He just said to take off my mask in response. I only replied with "Why?"

My friend is really concerned over this, but this guy really helped me out when I was struggling, and has always been super supportive of me. What do you think of this?
Is this guy a predator?
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