Other knights, either like the Blood Knights, have long since let go of worldly emotions, focusing solely on cultivation, unimpressed by the so-called bloodline inheritance. Or their time has not yet come, thus they have not met a partner.
It's fine for those indifferent to emotions, but those who want to be with someone for the long haul would surely prefer a female knight or witch who is at least level six or above.
Levi can understand all of this; such matters are ultimately mere spices in the lives of long-lived transcendent beings, unlike in past lives where mortals could almost die without romance. In any case, leaving one's inheritance before death is considered a perfect accomplishment.
After the wedding.
Levi also learned from Triss that Celia from the witch's cabin had recently passed away peacefully, having reached the senior fifth-circle realm.