If you are not sincere with the people you meet. They may be very nice people, and maybe the people you want to. You do not regret or to lose him, that you may not have the opportunity to meet.
If you are not sincere with the people you meet. It may be a good person and may be one that you actually want. That or you will lose him. You may not have the chance to meet again.
If you are sincere to people you meet He could be very nice, and may be the one that you want You will not regret it, or to lose him Which you may not be able to see again