It seem out here people are getting confused, in synopsis it say she is from modern world and she transmigrate to ancient world, she also marry the third male lead, which is so misleading that lead to utter confusion,
It seem the director has changed the storyline completely. Don't get confused since her bodyguard exist in her dream so she can't be with him , when she awake up she see the prince , she also realized that how much the prince love her,
Anyway new development in coming episode, we know that what is viewing is in her dream where she trying to redeem herself and make her to be a better person.
In coming episode we may see both wife and his concubine get kidnapped by the bandit and the bandit tied both on the either side hanging on the air they asked the SML to choose wife or concubine he was little hesitant to speak, before he choosing, Hua Quan speak to Mu Yao that she owe her this time and she cut the rope and fall into the ravine.
Luckily she fall into the river, she was able to swim back to safety. That why we see trailer in YouTube that her bodyguard was searching for her and later we see she get excited to see her body guard and hugs him