Hell of a problem!! SOLDIER!

[MIfan]

Hello everyone,
I rather keep my name unknown.
So i live in Israel and im serving in Israeli forces in a special unit (ranked 3rd in the whole world of special unites).
The thing is,
Since i was 15 i used to watch porn all the time and then i began to watch shemale porn, Since i saw ana manici,Mia isabella, maria cordoba etc...
I knew that i like shemales,
Last month i had a year with my girlfriend, and i love her, but i almost dont have any sexual emotions to her.
I dont know what to do, i dont want to live in a lie, I even dont know how my freakin jewish parents will accept that...by the way, never tried with a shemale, even when i was in Amsterdam i was with my dad, and i though to try, until we passed the shemale area he looked at them and said 'yewww'.
I was like 'yeah....yew.....'
Please help me, what should i do ><
and i dont care if i will get kicked out my unit! just to stop living in a lie.
Btw im 20 years old.