If you are dating for marriage, stay clear about what you are trying to achieve. You are not trying to have a pleasant night out or make a close friend. However much you like her or him, don’t get drawn into it if you don’t see the marriage potential. Treat dating as a means to an end; if the end is not in sight, stop wasting both of your time.
Focus on whatever helps you to reach your decision, not on having a great time. And don’t get physical – that’s not what you are there for. If you are going to be this person, you have a whole life for that. For now, stick with the program.