In the novel, the male protagonist will always meet his true love at a certain time, so his ex-girlfriend, girlfriend, and fiancée will all turn into vicious female supporting characters, doing what is called frame-up, but is actually match-making.
After Jian Muxin was bound to a system, she began to help these female partners fulfill their wishes and stay away from true love to maintain their IQ.
However, since true love takes action first, don't blame her