It obviously reads like he’s going to tell her he loves her. But the way the movie is, I think we’re to believe that he’s going to tell her he has the force. At first I thought this was a reshoot/reedit thing we’re they cut out his love proclamation and figured people would guess the force thing was what he wanted to say. But my working theory after thinking more about it that he really was going to tell her he had the force, and there’s a deleted scene where they do a fakeout where it seems like he’s going to tell her he loves her but then says he has the force instead. Somehow, that makes more sense to me as an explanation for why it’s like that.