Is it normal for a 43 - 23 affair of the heart

Are my feelings normal?I just experienced, which I've never had one before in my marital history and no afterwards I did not feel any better, actually worse.I was out of town on business walking down the street after work and contemplating my miserableness and saw an attractive girl stepping out of a bar, I glanced over, admiring her presence and continued walking and she walked right behind me. As I sensed her opening a door to go into a store I boldly turned around to check her out once more not caring if she noticed, she made eye contact and we started a conversation. She invited me back to the bar she just left. I said well, thanks, but I gotta wake up early the next day, which I really didn't, then I said to myself what the h*ll, why not. Well, she bought me a drink, told me she was 23 and I told her I was 43. We hit it off, I told her I was leaving the next day and staying in a hotel up the street within walking distance. She said bye to her male friend she was hanging out with at the bar. Up to my grand age of 43 , I've never done anything like this before, but I knew what was coming next. She said lets go. At this point I was on like a major drug of excitement and endorphins. We went back to the hotel room and I swear there was no hesitation on either part. I layed my lips on this precious being and I swear it felt like I was consuming her with all of my desire. At the time, it was the most awsome thing I think I have ever experienced.The sexual energy was so intense. I had this beautiful creature all to myself for one whole night. This was certainly not the activity I experience at home with the wife, which is understandably mundane on a regular basis.There is a saying, fast in, fast out. It is true. This was a typical one night stand and I kept telling myself this, but my heart and body wanted more, more, more. Nope. not gonna happen, she being a college girl is the epitamy of life, vibrance, friends galore. It was fun for a brief moment to feel younger and be a part of that vibrant, wild, tumultuous world she lives in. But now it was back to the same old sh*t, different day routine and wondering if I would ever experience anything close to that again. As far as my emotions, they took a nose dive. I think I was trying to associate all the physicality with emotions of the heart and it really screwed me up for a little while. Botton line, I was longing for it to be more then it was, versus reality. As great as the euphoric moment was, I would have been better off passing on that drink offer. Please don't bash me on the marriage/morality issue, I already know what I did was beyond totally wrong to my partner. Can anyone see the woods through the trees for me? Is it normal?