Is it toxic of me to question the guy I’m dating where he goes at night?

I’ve been dating this guy for 2 Months. At night time he seems to disappear. I’ve been told he sells drugs and stuff which would explain that? But I find it really weird he just dosent respond? Is this crazy of me and toxic to ask? It makes me wonder where he is

Is it toxic of me to question the guy I’m dating where he goes at night?
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