Made my friend cheat on their partner - am I a bad person?
TLDR: my friend cheated on their partner with me. Wasn't quite sure how to feel about it so I looked for stories about similar situations online and it seems like everyone is regrets it deeply but I don't, is that normal?
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Backstory:
When I first met this person in college, we got on well and shared the same group of friends. We remained platonic friends as I was dating my ex at the time. Toward the end of our time at college, I broke up with my ex and my friend got into a relationship with their current partner (who I have met and got on with quite well).
After graduating, my friend moved abroad but we have kept in contact, messaging each other occasionally (2-3 time a year). Just after graduation, I also found out through a mutual friend that my friend had a crush on me the entire time, but never made a move because first, I was in a relationship, and then they got into their current relationship. I have never told my friend that I knew this, and have kept all our interactions platonic up to this point.
A few weeks ago I was travelling abroad for work and happened to be in the same city my friend, so I thought this was a great opportunity to meet them and catch up. At this point I should say that I did (and still do) find them attractive and we get on well but I never had any intentions to escalate our relationship to anything other than what it had been before this trip. Because of this, I reached out to them to ask about local hotels, as I didn't want to impose myself on their personal space, however they offered to host me for a few days. I agreed, preparing to sleep on their couch or in a spare room.
When I arrived, they asked if I had any objections to sleeping in the same bed as them. Since their bed was big enough for the two of us to fit comfortably, I agreed but was careful to give them enough personal space. As we were about to go to sleep, one thing led to another and I ended up initiating intimate physical contact between us. They reciprocated, though I could tell they were apprehensive at points.
This went on for a couple of days before I had to travel back home. Since then, we have messaged almost every day but haven't discussed what happened between us.
I know they cheated on their partner and I know that I am responsible (though I do think that they enabled my behavior), but I don't feel any remorse, or have any other feelings towards it. From what I've read, other people seem to feel guilty when involved in cheating like this, so I'm not sure if I should be feeling guilty also?
I am also not sure as to how to approach this situation going forward. Should I discuss what happened with my friend, or see wait to see how things play out? While I mentioned that I do find them attractive, physically and emotionally, I do not want to get into a long-distance relationship, and I don't see either of us moving to the other person's country any time soon.
Lastly, I haven't spoken to anyone about this and I am not sure if I should. This is all a little confusing and I am looking for some clarity, so if anyone has any thoughts, opinions or advice, please feel free to share.