My (25 M) fiance (24 F) is leaving me because she asked me what was the thing I didn’t like about our sex.

So after 9 months of our engagement, last week we were talking about our sex life. Suddenly she asked me to compare her to everyone I had sex with. I told her the truth, I didn't really remember the details from my previous experiences. She insisted that I should remember everything so basically I made up some stuff just to make her happy (What was so good etc). Then she got little bit mad because I didn't mention anything about her qualities. Here comes the first issue. SHE asked specifically about my previous experiences, but regardless of that she got mad. Personally for me I have 0 issues with our sex, yes she got some flaws, but I don't really consider it to be a problem, because it is fixable right? (For instance, during oral sex she used touch her teeth sometimes). I pointed it out and she started to feel insecure about it. That is the day last day when she had a desire for sex, I mean like true desire you can feel it. After that she just stopped being turned on by me, because of the shit I said. LAST NIGHT, she wanted to hear what do I like about her. I told her everything from her looks to personal fetish stuff she likes to do. And there was one thing I didn't even think about she wanted to hear how good was she when she was on top. Now here is the funny part, I couldn't remember what I was talking about when I made up all of the stuff BECAUSE I made that up. Apparently I said someone was very good when we had cowgirl sex position. And then she really started to enrage, she started talking as if I was dissatisfied in everything. I don't know, I tried to talk her out of it, she just wouldn't listen. I know sex life is very important for couples, but she said she will never going to recover after the things I said to her. I just don't understand like what the fuck? If ANY of this wasn't asked in the first place, none of this would've happened right? We like everything about each other. I kept apologizing but nothing changed. Probably she made up her mind, when I called her she said she was in agony but when she was on the phone, she seemed happy with her friends as if nothing happened. I know she tends to be stubborn, but did I really crossed the line by telling her what she wanted to hear? I really do love her but is it really time to give up and move on? Plus now I doubt if she loves me because she wants to leave me for this certain reason.