Answer: The Main Event
"The Main Event" starred Ryan O'Neal as the boxer "Kid Natural" Scanlong and Barbra Streisand as Hillary Kramer, who held his contract. The 'glove' reference was to the boxing mitts O'Neal reluctantly strapped on (he didn't like to get punched), and, yes, the movie WAS a love story. It was quite popular, though the critics disliked it. Roger Ebert said "...the movie just doesn't have the life, the zaniness, this kind of screwball material demands."