There was this one episode where everyone on the ship had amnesia, and the two of them were unable to remember all the run-ins they'd had and got along so well they jumped into bed together. I thought: "well they've finally figured out they ought to really like each other!" I reckon they should have made a regular pair - Ro suits Riker a lot more than Troi does. Turned out the flip-side of the reason they kept locking horns was how much alike they are. They share the same temperament - both adventurous, both headstrong, neither has much patience with incompetence. I'd have loved to see them go on some really dangerous missions together.