不见不恋。
Better not to meet, to not fall in love;

不知不思。 
Better not to know, to not miss or think about;

不伴不欠。
Better not to be companion, to not owe the favour;

不惜不忆。
Better not to cherish, to not recall the memories or reminiscence;

不爱不弃。
Better not to love, to not part;

不对不会。
Better not to face-to-face, to not meet;

不误不负。
Better not to make mistakes, to not bear the consequences;

不许不续。
Better not to oath, to not carry the burden;

不依不偎。
Better not to rely, to not be dependent;

不遇不聚。
Better not to encounter, to not have reunion.

Debate-able...........
Some things our ancestors have came up with,
disagree with a lot of viewpoints
but trying to see why it exists and whether it is wise
or is really short-sighted and irrelevant..........