After awakening her soul weapon, Olivia gets another incredible boost in her overall power. Now, being in the early Immortal Realm, she is almost as strong as Helena, and it makes her very happy and proud as she feels she can help Lucien more that way.
To celebrate that, Lucien fucks her for another half hour before her body gets too full of different energies and her mind needs a rest. So he stays with her in bed a little longer, just holding her in his arms until she falls asleep.
'That was such excellent progress!' Lust comments in his mind in an excited tone. 'If you can help more of your wives awaken soul weapons before the fight with Tyrion, our victory will be a piece of cake.'
Lucien understands why Lust is always thinking about the power of his group, but when he looks at Olivia sleeping in bed with a beautiful and satisfied smile, all he feels is love. He is in favor of strengthening his wives as much as Lust, but he will never see them as soldiers.