Liu Qian said all this simply to make everyone view Ye Xuan as a scumbag trying to play the field with two women.
Once he achieved this effect, he could stand on the moral high ground and point fingers at Ye Xuan.
Of course, he was no good guy either, and as a countermeasure, Ye Xuan was quite likely to expose the fact that he had a fiancée.
Chapter 1162