Your continuing use of the incorrect pronoun is offensive to what trans people have worked so hard for over the years, and is offensive to me by extension of that same logic. Fallon is a woman and should be referred to as such.
If you find it offensive I'm sorry, but it doesn't change anything. it's not my job to stifle what is reality and what is the actual definition of things just so it doesn't hurt your feelings. If you can't take it then I am sorry, but I'm not going to pretend reality isn't reality, and that a guy walking around with a removed penis and injections is a woman.
I'm not trying to be mean or disrespectful, I'm a pretty nice guy and most people here know it, but reality is reality, definitions are there for a reason, they define the words we use.
I have no issues with him wanting to be a woman, or with you wanting to be a woman, or with your choice to do whatever it is you want with your body, that's all on you and I'm glad you have an outlet to change such things, but I'm not going to stifle what is reality just cause it makes you feel uncomfortable.