I met a lady for drinks and appetizers and all went very well.  Her hands were roaming and mine as well, mid-20’s, seemed to be comfortable with everything so we made plans to meet one evening..
I booked a room by the airport on my way back from a biz trip and set the time.  I had a chilled bottle of Rose for her as requested and then she had trouble finding the hotel. I had to go down to the parking lot to steer her in and then take her up to the room.  She was dressed in shorts and a loose top with no bra so I was feeling good.  She wanted food delivered to the room so I completed an order online to fulfill her request.  As I was completing the payment portion of the order, she came to me completely undressed, leaned over me with her nipples grazing my lips.  I was pretty excited, wrapped the order and we went directly to the bed.
About 2 minutes in she stopped and asked me the last time I was with a girl from SA.  So I told her the truth, about 2 days prior while in Texas.  She frowned at me but we went at it again more slowly this time and we both climaxed just before the food arrived.  
While we were eating she started in on the lady I saw 2 days ago and asked if she was a HIV infected crack whore.  I said no, she was a Brazilian student and very nice.  Well, I guess I screwed up with that as the next 30 minutes was her going through a series of meltdowns over what if she catches something from me (we did use a condom) and what if her boyfriend catches something from her, on and on.  I said I was worn out from the my trip and needed to go to sleep and then she thought I was kicking her out (I was, but nicely). She started muttering to herself, I didn’t do anything wrong, I didn’t do anything wrong and I replied no hon, you did nothing wrong, I’m just tired.  When she left, I sent her a text saying I enjoyed the time and meal then I thought about checking out of the room and getting another hotel near by but did not.
Now two days later, she is texting me and emailing me wanting to meet again.
I tried to figure out how I missed this and went over our first public meet trying to learn from this.  I think her roaming hands during our public meet diverted the  blood flow from my brain to my little head.  
But the Brazilian, damn, she sent me a picture of her bare legs sitting in her evening class saying she was bored and continues to text me every couple days.  I guess the good comes with the bad.

END OF MESSAGE

I was going to guess Diadabke Permintly but I don't know if she's from SA or not.

I always tell a girl, BEFORE the clothes come off, that we are responsible adults, right?  So let's talk about safety.  Share details of your health status, share test results, be open about whether you always use condoms or only usually use them, hopefully you will be able to wind up your half of the talk by saying "So I feel very confident that I don't pose any health risk to you. Your turn."

This conversation is not only a Good Thing to do, but should forestall any random questions about other lovers and the health risks they may pose.  Anyway, honesty does not mean you are obligated to share every detail of your life.  I will honestly say to a girl that I have other lovers and she needs to be comfortable with that.  If she's not, we should not be dating cause I'm not going to be exclusive with her nor am I going to lie about it to get you into bed.  Otoh, I'm not going to talk about other lovers, at least not today.  

Sorry guys, but I am about as mature as a hormone fueled 16 year old. I can't EVER remember having such a responsible, mature discussion with any woman before having sex with her.  

 
and yes, I will lie to get a woman into bed, that is I will "lie by omission" If a girl asks me my "number" before having sex with me, there is no way in fucking hell that I am going to admit my "number" is somewhere well north of 3,000 or so different women. Not if I expect that number to grow at least. lol

 
I have a much better way of dealing with direct questions like the one posed to the OP. Deflect, obscure, obfuscate. lol I would NEVER admit as the OP did that I had had sex just a couple of days before with another SB. Here is what I would have said. "It's been a while, I don't remember exactly when the last time was, but while we are on the subject, when was the last time you had sex with your BF???. Oh never mind, It's not my business and to tell the truth I really don't want to know anyhow. Now where were we, let's enjoy our food"

 
Maybe I should have been a politician or a lawyer, I don't feel obligated to answer straight questions with straight answers if I know I won't like where my answer will lead.

I can't see an upside to discussing past lovers.  If pressed I just say a gentleman never tells.

On one side of the street:
I do have a very specific discussion prior to BCD (usually in the follow up conversation after our 1st M&G) about testing and protection, as well as birth control, attitudes on abortion and I even tell her I have a few doses of "Plan B" on hand just in case. Before we take off any clothes I show her my most recent test results and ask to see hers.  If she doesn't have results to show me, I ask her some specific questions about when she was last tested and if she thinks that test is recent enough to ensure our safety. (I don't ask when she last had sex, but she may tell me.) This does a few good things for me:  
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1. She knows I take it seriously and I'm "safe".
2. I know (to the extent she's being truthful) that she takes it seriously and is "safe".
3. She won't ambush me in the middle of BCD with requirements or demands from the BSC zone. As with most of my practices, they are based on real-life past experiences. I was with a regular SB a few years ago that, after seeing her a dozen or more times, decided to take my condom off just before penetration and tell me she wanted to go bare - but I needed to give her an extra $1500 to cover her rent which was due the next day.  I told her I'd think about it, pushed her head down on me and blew a load down her throat and had her swallow it.  Then I drove her home and blocked her number. She still on the site
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On the other side of the street:  
I also deflect specific questions about past encounters. I don't specifically lie, but I do generally refer to "my last SB arrangement" as being sometime in the past - which is true. It may be 2 to 3 seconds in the past, or 2 to 3 months... but it's still in the past. Time is subjective for purposes of these discussions.  
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Of course, I don't even mention my hobby of fucking local pros and porn stars. If somewhere along the way, she asks me about past experiences  or perhaps sexual experiences during my travels I may mention my "experiments in the past" as well, if I think she will find it interesting. (Ok, so I don't mention there may be 300-500 experiments over 30 years. lol) After all, given the nature of an arrangement, I don't want to come off as a hypocrite if I imply that as a 57-year old, single guy, who has travelled the world extensively and have a penchant for women in their 20's that I would "never pay for sex".  
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Life is good.
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The Cat