I'm not sure what to do.. Help?

So this close friend of mine.. she recently had a break up with a guy. Few days ago. Yesterday he told her he wanted to meet her because he wanted to introduce her to his friends. I thought there's something fishy behind this.. I told her, but she's really naive and innocent, and she's like worried about him, that by not going she might hurt his feelings... But she supposedly already broke up... I'm genuinely worried. Why would he wanna do such a thing? What to do in such a situation?
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