These girls are pre-op transsexuals, they have started hormone treatment to become a woman and some may be living as a woman full time. They may or may not have had surgery to remove male genitalia.
TS Post op (Transsexual or Ladyboy)
These girls are post-op transsexuals, they have had surgery to remove male genitalia and therefore have female genitalia. They have had hormone treatment to become a woman and live as a female full time.
TS Non-op (Transsexual or Ladyboy)
This girl has started hormone treatment but has not had any surgery. They may still have male genitalia and may or may not be living as a female full time.
Cross Dressing (CD)
This is someone who is a man who enjoys wearing female clothing and make-up and may or may not have had hormone treatment.
CD/TV (Crossdresser/Transvestite)
This is someone who is a man who enjoys wearing female clothing and make-up and may also have started hormone treatment.
These are just a few of the terms used when referring to transsexuals and cross dressers. There are many more and if you are unsure then it is best to ask.
When it comes to dating a transsexual you may find yourself in a different situation than you are used to. You may feel awkward or intimidated but it is important to remember that dating a TS is no different than dating anyone else. Be sure to respect them and treat them as you would anyone else.
When it comes to sex, it is important to be open minded and accept the person for who they are. It is important to ask questions and be open to whatever the answer is. It is important to remember that each person is different and will have different needs and wants.
Finally, if you are going to be with a transsexual it is important to remember that they may have had a difficult past and may be worried about things like rejection or even facing discrimination. It is important to be aware of this and show them love and support.
Remember that dating a transsexual is different than dating anyone else, but that doesn't mean it can't be an amazing and rewarding experience. Be open-minded, honest, and respectful, and you will surely be able to have a fulfilling relationship with a transsexual.