Is AUTHOR wrong in the post ? POST : I shortened this story to keep it in the 3000 character limit.

For some backstory, I had known her for about 4 years. We knew each other in High School and had the same clubs and friend pool but weren't that close.


I ended up telling her during a "how are you?" text chat she initiated that she was hot and she was impressed with my confidence and over the next month or two we progressively got more involved as horny teenagers. Sexting, nudes, the whole shebang. I found out that she was into some kinky things, at least to me at the time. She liked blindfolds, headphones, whips, chokers, being thrown around and smacked on the ass. All of that was new to me and I didn't like the idea of hitting her, but that was her thing and I loved to please. I explained that to her and she liked it. 


We ended up agreeing that we would meet up at a hotel when she was in my area and fuck to put it bluntly. The day came around and we actually made somewhat of a date around it. We went to a sex shop and I bought a bunch of toys that she was into and grabbed some food. I bought cuffs, blindfolds, nipple clamps, all that stuff. She asked me when we were walking into the hotel if I had any STDs and I told her no, I happened to have recently been checked for several as part of a routine health check and everything was negative. I actually assumed that she didn't have any before she asked and she verified that she didn't have any. I had sex with a few girls before her, most of which were virgins and none of them were the type that you would even remotely expect to have an STD. We got to the room and stripped, we were both impressed with what we saw and ended up kissing, touching etc. We took a shower together and she got on the bed with her cuffs, blindfold, etc. I had a number of condoms on the bed next to us and started doing all kinds of foreplay until she was ready so I stuck my dick in for a few pumps (maybe 10 seconds) to lube it up right and then opened a condom to put on. She heard me tear it open and said the safe word, took off her mask and by the time she looked down the condom was already on. She asked if I had just put it on and I told her yes, and she was pissed that I would do anything before putting on the condom. 


I asked her if she was okay and I was kind of shocked because I didn't expect that I was doing anything wrong. She told me that she was pissed about the condom and was no longer in the mood. I offered if she wanted to stay and watch tv and eat pizza without sex and she wasn't interested so said she was leaving. She offered to pay me for the hotel and I told her no and that she had the right to leave whenever she wanted. I spent the night feeling horrible because I didn't intend to emotionally hurt her like that yet I can't blame anyone but myself. She never told me that she didn't want me doing anything without a condom and I assumed it wouldn't be a problem since it was only a few seconds and she was also on birth control anyway.


AITA?