For me it was the proposal in s10 that came out old nowhere. It just came off to me as the writers desperately trying to make up for making Lois look like a consolation prize. "Look he may want Lana but he's going to marry Lois....7yrs after he proposes". I hate the mind rape on Lois more than the one in Pandora because almost everyone was in on it. They used her as a crystal ball and then never told her about it. It's just another example of everyone on Smallville collectively lying to Lois and keeping her out of the loop. I hated it when she was the last one to know who Green Arrow was, I hated that she was the last one to know the truth about Clark and I hate that they steal Lois memories in Pandora and just send her on her merry way. This is why I always feel Lois was so disrespected in Smallville.