The notion that Anakin didn't really love Padme is absurd. It completely undermines the entire Saga. The reason Luke can get through to Vader is because he's his son, the child born from he and Padme's love. There's nothing whatsoever to suggest that it wasn't real love. Lucas says over and over that they loved each other, the point is that on Anakin's end it grew to be unhealthy and dangerous. It has nothing to do with a cheering crowd either. He needed to feel that love and have that attachment because of his upbringing. He never totally fit into the Jedi and with Padme he could actually be himself. Love is a crucial element for a tragic hero, and both Lucas and Campbell made very sure that the Anakin/Vader fit it perfectly. False love doesn't cut it. The love story didn't work for everyone, but that doesn't mean that Lucas didn't intend it to be a real pure love that Anakin felt toward Padme, a love that was tragically corrupted.