I think that probably it sounds strange or freak...

But I want to make clear....:-

question 1.
When you have a fun with a lady, have you ever tried to give a lady your oral services to her secret place?

I did!!!
But, one of my friends told me to be catious to STD.....

question 2.
I did oral....but when she gave me back oral BJ, she used condom

 Did she feel that I was not D/D free?

When you meet a provider for a session you should start the session with conversation about the limits of the physical aspects of the session. That way you will know what to expect. If things aren't clear, ask questions.

There is a concern over STD's, but many if not most find that the rewards outweigh the risks.

If you are interested you can search on the topic here and finds reams of information.

As for her desire to give CBJ, that is not too unusual either.  This is something that should not come as a surprise if you researched the gal's reviews and profile before you called her for an appointment.  
The information about DATY should also have been availiable.

When you check the reviews, the profile page will point out if she does CBJ or BBJ. There is a risk with anything you do, I always DATY unless I go there and it smells funny, but that is a choice you have to make.

.... think about the numbers and the relative risks.

I would imagine most men have only one or two sessions a month and often with the same ATF.

Even a low volume provider might easily see five different men a week.

No wonder some are more  cautious than others.

MH50

What you say makes no sense.   When a woman sees x number of men per week, and if they are all "datying" (is that even a verb?!?!?) her, anything that any of those men have in their mouths can be transmitted to her.

So even you only see the exact same woman, if anything is unprotected, there is risk of transmission of something from one of her other customers.

Number 1:  I always want to pleasure her with oral service.  And I have not yet been disappointed, and hopefully, neither was the lady.

STD is always a concern, but from what many guys have said, you are probably more likely to pick one up from a civvie you hooked with in a bar.

Number 2:  I don't like CBJ and generally don't see ladies that do that.

Guess she was not as trusting as you.

Swim

DATY/BBBJ are very improtant to me; Make sure you get a VIP membership so you can research properly.Pay special attention to the profile portion of the review page..However this might be in conflict with the actual reviews posted..Perhaps early on the lady perferrred CBJ  (covered bj) then changed her mind and now would offer BBBJ.

Hygiene plays a very important part in all this. Makes sure you are clean in all parts of your self. A shower when you arrive at the incall location will definitly make her more comfortable. Have fun..you are gonna meet some wonderful women her via TER!