I'm thinking that if you are dating an FJ, it would be useful to let them know in what way you will respond best to them expressing their affection for you. It only really becomes a problem when the way the person is accustomed to doing so is rejected, but no substitute is offered instead. It may seem like that should be intuitive, but it isn't always. For example, I would tend to show physical affection because I like being close, but I would see it as more intrusive than verbal affection so only do it with a very, very select few and even then not in the same way that it sounds like an NFP who's let someone into their inner circle would. I do like to surprise people with little presents or things they'd like, but I've found that some people really feel uncomfortable with that as well (even if they aren't expensive things). I'm not sure why that is. I've found that for people who reject some of my most natural ways of expressing affection, they often respond best to something homemade or cooked for them. Why would that be?