expecting a large sum of money from an inheritance

 Tell him how desirable you are and that you are expecting a large sum of money from an inheritance and then just keep asking questions, even ask another question about any of his answers.

Keep asking questions as star struck lovers do, so he is occupied in spending HIS time in explaining things to you.

You can occasionally answer him with just "OK" Then he has to come back to you with things that will take up more of his time