As am I, however, considering how shy and hestitant Cat, Liz, Nana and even Amelia will be to hop into bed with the MC, I still think it will be a while before they are all comfortable enough with their feelings to jump into group sex. After that hot scene with Cat, I expect they might cool things a bit and figure out their feelings for each other before they actively start having sex.
I love the game, but its pretty clear so far all when it comes to the MC's family, including Jamila, its gonna be a slow burn to varying degrees before they start having sex with the MC. I'm even surprised and grateful we got that heavy petting and oral sex scene with the MC and Cat, so from here on out, everything else is a bonus!