Is it bad to call out a playboy?

This guy that I previously liked and I think is interested-ish enough in me for me to have thought there might be a possible chance with him. Yet after him avoiding saying he has a girlfriend and hearing for most of his friends but he talks to multiple girls at a time I feel like I should at least say something to indicate that I'm not into that. The only thing I'm worried about is that he is a coworker and I've been left on delivered since I've tried to invite him out the last time we talked.

Is it bad to call out a playboy?
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