Is having sex with transexual girl wrong?

theres this girl that has the breast but no vagina that has been trying to get me to be sexual with. and thers this girl that is practically a girl but just has both nd has been trying the same.. sending nasty pictures and all.. but my question is in the bible it says to be with same sex is abomination.. if i was to do anything with them would that be considered wrong?? i mean i dont know if they would be considered boy or girl or maybe both??? its really messing with my head any help would be gratefully appreciated