Sounds more like an issue of not being dualized which would be true an issue, regardless of what feeler you'd run into, then. Not being receptive to dualization is the biggest issue as to why duals don't work in the first place, though again, that is true for most ITRs. Personally, I cannot envision myself to not be with an Fi type; I adore Fi way too much and need it in my life. Another thing I've come to learn and appreciate now being with a feeler is how much I miss out because I do not focus on the interpersonal sphere the same way they do. Then there's the entire aspect of how much you grow as a person thanks to duality.
Tbh, people often say duality is over-reated on the internet but I'd say it's underrated. Duality is fucking amazing and I wouldn't be even half the person I am now without it. But yeah, I second what [MENTION=20385]Alea_iacta_est[/MENTION] wrote. Sounds tbh like they are alpha SFs to me, assuming of course, that you are an ILI here. Gamma NTs tend to see alpha SFs as too frivolous and emotionally expressive (SEEs are expressive but... it's intense and less about the outwards pouring of emotions that comes with Fe valuing types), and if they complain you aren't expressive enough, it sounds even more like they are Fe types tbh. I've never gotten the complaint to be more expressive from Fi egos, but I've gotten it from Fe egos.
[MENTION=23213]GarrotTheThief[/MENTION] what [MENTION=10757]Nicodemus[/MENTION] wrote is so hilariously Ni, though, I don't even understand how you are debating whether it is Ne or Ni. Which is why I wrote to you before that you are operating on faulty logic in how you see Ne vs Ni, of course Ni can consider different frameworks and perspectives by taking in a breadth of information but that's the thing; Ni liberates itself from the object that is discerned. Saying it's "neither here nor there" is what Ni types do, it's liberated from the object, suggesting it could indeed be anything based on how we choose to see or interpret it. Ne doesn't do this being an extroverted function and thus is also invariably captured by and forced to see the object in and of itself. It doesn't question the nature of what something is but just like all the extroverted functions do, take it for granted. Ne is much more concerned about understanding how one object connects to another object, whereas Ni can of course take in a wide variety of what you here call "frameworks" but ultimately choose to detach itself from all of it and wants to see the underlying mechanism behind them. Ne looks for what is on the outside, Ni on the inside.
Also, another tell-tale sign that Nicodemus is an Ni type should be fairly evident by looking at his avatar; that image alone is such an Ni-Se image, especially that of the gamma quadra. INTJ is pretty obvious but that's me.