And sometimes when you think you are losing someone it can make you act clingy even if you're not normally that way.
I relate to this. I only become clingy (and I hate it) when I feel there's been a serious miscommunication with someone I care about and I can't remedy it because an attempt to do so will push them further away. The "attempt to do so" can be clingy because I will make myself available to that person much more than I normally would to talk and try and normalize things, and to get a feel about the energy between us. But this isn't a good thing oftentimes because it only makes them feel forced to communicate, to try and make me feel better and to show me all is OK. It makes them feel crowded. Space is a better thing, especially for another NF. NFs need room to breathe and consider situations/options.