Complex sentence: She fell in love with Jimmy, and dated him for a couple of years and struggled with the fact that the shooting left jimmy handicapped but stayed faithfull by his side, until she suspected him having feelings for Ellie.
Split into simpler sentences: She fell in love with Jimmy, and dated him for a couple of years. She struggled with the fact that the shooting left Jimmy handicapped, but stayed faithful to him, until she suspected that he had feelings for Ellie.