>>717204323
I got the vibe that they had fucked already when Gustave and Sophie were separated, because there's no reason to believe Gustave and Lune were anything more than a casual fling due to her own character flaw of keeping people at arms reach and his obsession with Sophie. Gustave probably fucked a lot of women to cope with his breakup, and he's an attractive, smart, and affable guy, so there would have been no shortage of women willing to share a bed with him. That flower girl at the start absolutely had sex with him. When Gustave reconected with Sophie he was no longer on the market and didn't want to have any more casual sex until he properly grieved her. Sciel was giving signals, but I like to believe she wasn't gonna press him until way later, she was just laying the groundwork.