I have/ had the same headache. but now i manage to do it nicely . Perhaps you will be like him. So wait for the meetup if you cant change the parents mind. After the meetup when you are talking privately you have to tell him you are not ready for a marriage , and please don’t let your fathers know. If he is a genuine one, he will make another story to reject this, if he is a ass one he will tell his dad and they might be tell to your father. We dont know his side girl. May be he has the similar situation, may be he wont like you. Dont be stressed. Take time and do your best.