At the time of the famed tourney of Harrenhall, Lady Lyanna Stark was betrothed to Eddard Stark's best friend, Lord Robert Baratheon, while Prince Rhaegar Targaryen was married to Princess Elia Martell of Dorne. Rhaegar eventually won the tourney and the right to name the tourney's queen of love and beauty. Tradition required him to name his wife to the title, but instead he gave the title to Lyanna Stark causing a great scandal. Sometime later Lyanna is spirited away by Rhaegar, an event that would eventually spark the Baratheon/Stark rebellion against the Targaryens.
It is heavily hinted by several characters that Rhaegar and Lyanna shared a mutual attraction, and that the two of them eventually eloped.
Lyanna Stark could have been betrothed by her father, Rickard Stark, to Robert Baratheon against her wishes and then rebelled against her father's decision by choosing a man more to her liking. Or maybe she was attracted to Robert Baratheon, but then switched allegiance to Rhaegar Targaryen.
Did Lyanna Stark ever love (or was attracted to or even interested in) Robert Baratheon?
Please provide answers from the books, but if the books don't answer that, I would accept answers based on the TV series.