How do you know that he is not a player?
We can never completely know everything about someone, and even a hardcore player can commit and change, which I have also seen many times. The question isn’t so much about his past behavior but about how he relates to you today. The best approach is to look for the clues. So, is he genuinely interested in your life and your passions? Would he spend an afternoon with your parents/caregivers looking through your baby photos? Most importantly, does he remember your likes and dislikes? Players can sometimes be very crafty in sounding interested but they usually forget everything shortly afterwards. In short, look for an in-depth connection rather than a flighty one.