Is It A Mistake?

So I am a 31 year old female. I am a nurse and work for a multi-specialty care clinic. I like my job and the people I work with. Let me share a little about my past before I get into this. I have had just two ling term boyfriends. Dylan was my high school BF and the one who took my virginity. We broke up in college and soon after that I met Paul. We started dating when I was 22 and, until this year, had been living together for the past 6 years. This year, after sex, I mentioned starting a family and asked if he ever thought about getting married. He said he didn’t want to talk about it right then. A few days later I asked why he didn’t want to talk about it and he told me to stop pressuring him. I was surprised by this as I had only mentioned it twice. He seemed to withdraw for a few weeks then one Thursday afternoon he told me that he needed a break and was moving out. I was crushed. I loved Paul and, while our life had become routine, I thought we were going to grow old together. He just said that he needed space and tome to think. I was devastated and didn’t know what to do. I became depressed and withdrawn. Fast forward 2 months and my girlfriends had had enough. They booked a hotel in Vegas and bought me a ticket. They wanted to help me get back on my feet. There were lots of jokes like “what happens in vegas stays in vegas” we all laughed. The first night there we were feeling no pain and the margaritas were flowing. I did’t intend in hooking up because I had never really just “hooked up” before, but I wasn’t going to turn down a great opportunity either. That is when I actually ran into someone I knew. John is a provider at my clinic. He is tall and handsome but he is also 52 and married. We started talking and dancing. He was a great dancer and so easy to talk to. One thing lead to another and I ended up back in his room making out on his bed. When he started to remove my clothes I didn’t think twice about it. When he started to expertly lick my pussy I was in heaven. He made me orgasm faster then I ever had in my life. When he removed his clothes I was surprised at how fit he was and then I saw his penis. I had only experienced two before but this one was much larger and thicker then either. I asked if he had a condom because I can’t take birth control. He sad he had a vasectomy. He then slowly entered me. Once I was accustomed to his size he fucked me like I had never been fucked before. I lost track of how many times I came. When he was ready to cum all I could think of was that this would be the first man to actually ever cum inside me. When tensed and I felt his release inside of me I almost passed out from my orgasm. We cuddled after then fell asleep. I woke up in the early hours with him entering me from behind. He fucked me like that until we both came again. When we woke up we showered and he washed me then went down on me making my knees buckle with another orgasm. He said he had to go to the medical conference but gave me a key card and said I could stay as ling as I wanted and hoped I would cone back later. I was laying naked in the bed watching him get dressed absentmindedly caressing my breast when looked at me a growled. He jumped on top of me a took me. I have never had sex like that. He just positioned me and entered me in one deep stroke he was all the way in. He was rough and passionate. After he came inside me again, I said wow and he said he couldn’t resist. I liked the animalistic way he took me. Needless to say, I spent the next two nights in his bed learning about how much I love different kinds of sex. I learned that oral sex is not just an obligatory part of foreplay but instead it is a way to enhance your sexual desire for each other. I also let him cum in my mouth and yes I swallowed fir the first time ever. We even tried anal, which I enjoyed after I got used to it and after he spent over an hour teasing me and licking me getting me ready. Lots of lube helped as well. Since getting back we have gotten together a few times. The last time was at his house but when I got home Paul was waiting for me. He apologized saying he was scared and didn’t know what he wanted. He then dropped to his knee and proposed. I started crying. Her I was with another mans cum in me with the man I had planned on spending my life with asking me to do just that. I accepted and we are setting a date fir September but I cant stop thinking about Vegas