This has bene asked many times on this forum. Doing a search will provide you with all the information you could possibly want on CX F seating or any other aspect of the service.

In the 747-400, if you do not want middle seats, the only other vialbe option is Row 1. The seats there, although not next to each other, are somewhat close and would allow for some type of a shared experience. That said, the seats are generally considered too far apart to allow for normal conversation. Rows 3 and 4 would not work at all, as the center seats get in the way of the window seats. Row 2 is way too far apart to allow any type of shared experience or conversation.

If I was traveling with someone and wanted to sit with or converse with them, I would go for the center seats in Row 3, with the Row 4 seats as my second choice.

Unfortunately, unlike British Airways or American, CX's F seats do not feature a stool with a seatbelt that would allow for two people to dine at the same table.