The MC's internal monologue will always show attraction to guys and girls no matter what. It's not a great solution, but you can hold down ctrl to skip through sex scenes with girl's very quickly. Unfortunately, the ability to skip sex scenes with some of the girl's would require major rewrites to later parts in the game, so I don't think it can be feasibly added. And while I enjoy writing sex scenes with both guys and girls, I do lean more towards girls with the game's content, so I don't think it could really be set up so that you could avoid them entirely. Sorry.