After your first date with him, if he appears to be any of these personality types, you should totally avoid seeing him again.
The rude guy: He is all smiles and pleasant to you but when the waiter doesn’t come your table immediately, he tells him rudely how he is not doing his duty properly. When the food arrives, he minutely checks everything and if something is not perfectly down to the minutest detail from his brief, he yells at the waiter and calls the restaurant’s manager and makes sure the waiter gets scolded in from of him by the manager as well.