"Do you want me to go with you in the past?"
"Yes." Liam replied and opened the time and space gate again to go back in past.
This time he is going back specially for Selena. We know that time and space gate is random, but the system already told him that it will control the time and space gate, sl he can go back in past with his desire location or the place where there is any cause and effect of him.
As for why he wanted her to go back with him.
Let's just say, she will go after him either way, that's the main point.
As for other one, umm she could be his bodyguard.
After meeting heavenly dao unfortunately, he get to know that even with golden finger you need to have some kind of backup.
Lilith looked at the time and space gate, she wanted to see through it but as if it didn't existed in the first place.
She sensed nothing, she didn't asked him.
But after thinking for a moment she asked "Would you meet them before you go back in past?"
