Unisexual?

[CCC]

Well logically there are GG's--MM's--and TS's--any others??

So if you like all three then you must be TRI-SEXUAL.
Now if you only like GG's and TS's-then you are BI-SEXUAL -- aren't you?
So how come only GG's are referred to as BI-SEXUAL?
I like GG's and love TS's and have done one MM so does that make me TR-SEXUAL or BI-SEXUAL or just a horny dirty old man??