Men have a potential problem when it comes to loving (agape) in that full-servant enjoyment sense. It has been seen plenty of times, a wife gets sick and a husband starts taking care of her and watching over her and his self-perceived role of “husband / lover” shifts to the bitter “caretaker / parent”. In some cases, if an illness is prolonged the husband may detach to the point of remaining in the caretaker role even after his wife gets better.
Mentally, it’s a dangerous place to be in. No longer are the lover feelings being placed on the wife, but she becomes a vehicle of love-bearing or caretaking: self-sacrifice at it’s worst. The difference is so drastic that the husband might transfer his intimate love to something or someone else.