Is it bad to sleep with him on the first date?

I’ve been talking to this guy everyday for a month. We connected on tinder. We get along nicely. We don’t have particularly deep conversations but there was chemistry in person and I slept with him on the first date. We have another date planned but I’m wondering does it matter? Would it kill the potential for a long term relationship? What should I look out for? What would be a red flag. Also we are both about to be 40 and probably just over the games.

Is it bad to sleep with him on the first date?
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