Hiii i just read the last volume before Miuras death and I noticed an implication of Griffith sleeping with Charlotte a second time? I dont understand why he would do that especially since in my eyes he doesn't have feelings for her ?
I actually have a couple of posts where I get into this, here and here.
Basically, I agree that he doesn't have feelings for her, and I don't think there's really much of a good reason for him to be sleeping with her in terms of plot or character (I imagine it would be easy for him to at least put it off until they're married given the clusterfuck premarital sex caused last time lol) but I think it's potentially an interesting choice on a thematic level.
Arguably it's suggestive of Griffith's emotional repression and discontentment in the midst of achieving his dream. His dream goes hand in hand with both feigned heteronormativity and trading sex for resources, so regardless of whether it's logistically necessary at this stage, it makes thematic sense that the maybe burdensome obligations of pursuing his dream should follow him even post-Eclipse. (More on that in those links up there.)
But the more straightforward, less thinky explanation is that maybe Miura just wanted an excuse to draw a couple of hot characters naked lol, and they are in a relationship after all even if it's a sham on Griffith's part. Part of Griffith's dream involves a relationship with Charlotte which involves sex, so why not include it? He doesn't have to love her to fuck her.