I don't think what matters most is for you to try to define what label you fall into i.e. gay, straight or bi.

What matters is your attraction to that community and the hold it has on you. And yes, you are right - people wanting to break an addiction or obsession, are best served by disengaging and separating with the people/environment that are the source of such cravings or desires.

It is also important to address the cause. From what you write, I wonder if you have processed the death of that guy. You really liked him & it seems that his death (a traumatic loss?) was the trigger point which led you to throw yourself obsessively into that community at the expense of 'real' human connections

In your words: "After his passing, I turned all my attention to that and isolated myself from real people and became fully intertwined with the deepest roots of the furry community").

This seems the most important to address right now: processing the impact of this impactful relationship and his subsequent death. These might help uncover the root cause of what is happening with you.