Ohhh... my favorite topic! HSDS's Zhaomin and ZWJ!
ZWJ + ZZR
I agree with Ken: ZZR getting jilted at the altar is not ZWJ's fault. She lied and cheated (and inadvertently killed- well at least in some versions) to get the marriage arranged, so it seems only just to me that not only does she not get ZWJ, it happens dramatically to her.
Now I totally hear the point people make that her shifu was to blame, that circumstances were dire etc. but it's the same thing with legal systems.
A criminal who was ill-treated as a child, who comes from desperate circumstances etc. can be justifiably given a lighter sentence or perhaps sent for therapy instead of punishment for theft and murder, BUT that doesn't mean that it is fair for other people to suffer for their suffering. ZWJ shouldn't be held accountable to marry her after being duped into promising to, regardless of how ZZR did all the un-right things she did because of "her circumstances".
I've always been a little miffed at the pity ZZR inspires, and how that seems to "justify the means" with which she ultimately chose to carry out her plans. That she doesn't have enough of a spine to have a strong moral compass is a fault.
ZM's father tried to make her choose between Wuji and her family/position/tribe, Wuji was caught between Wudang and Ming, Wuji's father was similiarly trapped between the 'good guys' and protecting his family... and they all chose in a way that didn't bend their moral compass (poor Zhang CuiShang and Ying Susu did so most dramatically by killing themselves. You could say ZM abandoning her family was a betrayal, but she made it very clear that she chose Wuji and she refused to take part in the fight against her family at the end. So I consider that cleanly defecting.)
PS
1) That's not to say ZWJ is golden... he's indecisive and pretty wishy-washy in how he treated the women in his life, but I don't fault his moral compass in choosing to rescue his Yifu over up-holding his promise to marry ZZR right then/there (i.e., he was still committed to marrying her later if she was willing.)
2) On '78's Zhao min's ending. If I remember it right, it was open-ended... she seemed to 'appear' again at the end, potentially implying her jump was some sort of ploy. But yes, she jumped so that she got 'out of the situation' on her own terms rather than Yang Xiao's.