Is it wrong to withhold financial support to those to whom you used to give unconditionally if they don't make decisions rhe way you'd prefer?

This involves a guy friend, we've been tight for years and years, slowly working towards a thing, but now that I finally have a job that pays well, though he still leads me on, I know he's a bit cozier than I'd like with some other girls he knows I don't care for, and he's being all secretive about it. I send him money here and there to help with him and his 2 year old, (mother disappeared) but I'm kinda feeling like not anymore.

Is it wrong to withhold financial support to those to whom you used to give unconditionally if they don't make decisions rhe way you'd prefer?
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