To understand the event "Jim and Tiffany are in a relationship.  Jim asks Tiffany to marry him.", it is important to know that Jim was really busy with classes and job but finds time to shop for an engagement ring over Christmas break. He buys the ring...but first he makes the trip (alone) to her parents to ask for her hand in marriage. Parents were agreeable and wanted Jim as their son-in-law. So Jim comes back and asks Tiffany to marry him. She says yes.