Men as a general rule rarely develop chemistry for someone for whom they have no chemistry upon meeting.
Women sometimes say it develops over time.
Either way, it must be there or you will merely be marrying a buddy. You can find out on your first dates. Don't make it difficult on yourself. Or are you secretly embarrassed to show him or her around. Do you like his or her line of work, but also, are you comfortable with his or her level of ambition, activity and future plans.