When Dagny and Hank finally meet again - after her month in the valley, during which everybody including Hank believed she was dead, and her speech on Bertram Scudder's radio show - Hank lets her cry in his arms, declares his love for her, and apologises for the mistakes he's made. It's double tear-jerking because we know that Dagny has already fallen in love with John Galt by this time. Then, Hank declares that he knows Dagny has found someone else judging by her words on the radio, but accepts it and just wants her to be happy. Awwww.
Easy to miss in the 50 pages of speech, but: "Do you hear me... my love?"