I did feel guilt until i dated one for a year. She was a woman in every way bar the obvious, and because she was just like any of my previous girlfriends the guilt went away.
I think you need to see shemales as real women who were born in the wrong body, which is mostly the case, and dont dwell on the fact they were born men. You will be fine then.
I sense you have never dated a shemale before, you need to