See how long he sticks around afterwards. If he does some aftercare and keeps you company then he’s really into you. If he dips right after then he probably just wants the physical

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Your question might be about figuring that out before you do anything, so if that’s the case see how quickly he tries to initiate sexual stuff and have honest communication about it

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Don’t have sex for months and see if he sticks around. Not 100% but it’s the best way to tell

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