I [19 M] am worried about how to end my relationship with my FWB [46 M]

TL;DR: I am concerned about the situation with my fuck buddy. I am in a new city, we live and work within a five minute walk of each other. We have become extremely close in a very short time (2.5 weeks), but there are several red flags (described below) about him which I feel could lead to an abusive relationship.I’m sorry for the length of this post. I have tried to summarize it before getting to the entire essay. I have only known him a few weeks so I summarized our relavant interactions and what I have found online about him. I feel confused because I feel strongly about him. Either I'm overreacting or I need to stop seeing him. Please help me with what to do Reddit.Background about me:I am a college student, and I have moved to a new city for the summer for an internship about 2.5 weeks ago. I am completely new to this city, and three hours from home. Other than my fuck buddy (let's call him Troy), I have very few friends here besides my roommates (two people who I have just met).I am in a very open and committed relationship with my boyfriend from my school. We have been together (open the entire time) for one year. He is 24 years old and knows everything that is happening with my other sexual relationships as well and vice versa. We consider ourselves polyamorous. This is really only slightly relevant. He is still at our school about 4 hours from where I am from the summer.Summary about Troy and the major red flags:He’s 46. He lied to me and claimed he was 31. I have not confronted him about this. I don’t really care that he’s 46, but clearly I can't really trust him.He is extremely athletic, big and strong, and honestly does not look 46.He was raised in Romania, and apparently saw active duty in their armyHe owns his own successful business.He knows and has introduced me to a lot of people and is well established here.He’s not okay with my open relationship.He mentioned that he has anxiety stemming from his last breakup, and that he has been prescribed medication (for when he needs it) but hates and avoids taking it.We’ve hung out almost everyday that I’ve been in this new city. I have enjoyed the time we’ve spent together. He’s never acted violent or maliciously around me.He knows exactly where I live and work, and also lives and works in close proximity (5 - 6 blocks) to me.He wants to have unprotected sex, and I don’t. He is extremely pushy about this, and once joked that he would rape me.He allegedly assaulted someone in 2011 at a bar. I found a blog post about it from the victim.The entire (excessively long) story:We began talking on Grindr (gay dating/hookup app) while I was here preparing to move about a month ago. We texted back and forth until the day that I actually moved here. During this communication I established that I would only be here during the summer months and also that I have a boyfriend. He asked me at one point to guess his age. Based on the fact that he owns his own business, and his appearance I guessed 38. He told me that he was 31 (I found this was untrue last night using google).The day we met (the day that I moved to the new city) I was entirely charmed by him. We walked around the city and he showed me his business, and after this we went to his place. We began to kiss and cuddle, and while this was happening he poured on the sweet talk (you're beautiful, I want you to be mine, etc). While I didn't mind it, it seemed to me that there was some type of disconnect. At one point I said, you remember that I have a boyfriend correct? He responded by saying that he had put it to the back of his mind and did not want to talk about it. He also did not remember that I would not be staying in the city permanently. While I thought these things were odd, I didn't think all that much of it. We then went out to dinner, and had sex later.We hung out (not just for sex, but meals, movies, walks etc.) everyday and we continued to become infatuated with one another. About a week after we first met, he texts me saying that he believes strongly in monogamy, and I tell him that we should have a conversation in person about this topic. When this conversation happens over dinner a few days later we essentially agree that we were looking for different things and that it would be best to stop or slow down. He told me that he could not stand to think about sharing me and that he did not want to know anything about my relationship with my boyfriend. He also said that his last breakup two years ago was still messing with him but didn’t go into detail. It was established that we needed some space, and that he would think about the whole thing. To be honest I was pretty devastated that the conversation went poorly. We continue to communicate over the following days via text, and eventually he invites me over to meet his friend and watch a movie, during which we begin to kiss and cuddle. We didn't really ever continue our discussion, it sort of just picked up where we had left off.We spent another great day together walking around, shopping, eating and having sex this past weekend. When we have sex, he tries to convince me to have sex without a condom. Latex apparently irritates his privates, makes him lose his hardon, etc. I have always refused to have sex without a condom, and he has whined that I don't trust him (clearly I shouldn’t), that it would be so hot, that there's no need to worry because we're both clean, etc. This past weekend I slept over and when we woke up, we started dry humping, naked, without a condom. That's fine in general, but he was clearly trying to get it in there so I stopped him (we had to go also) and he casually joked that he would rape me. It was clearly uncalled for, but I didn't really respond to it and we just got dressed and left.That was the last time I saw him. Last night I googled his name and found out his real age is 46, not 31. Clearly I was beyond stupid to believe that, though I did have suspicions.I also found a blog post from 2011 by someone who was allegedly assaulted by Troy. I'm sure it's about him as it specifically mentions his business. The entire blog is a really dramatized diary of this gay guy. They were apparently at the same bar (they were intoxicated) when Troy overheard this guy speaking badly about him. Troy apparently shoved/punched him and gave him a bloody lip (unprovoked other than the shit talking allegation) and left the bar shortly after. Later in the post it shows a conversation they have over the internet on a gay hookup site. Troy was defensive in the conversation and admitted to doing it but didn't apologize.Conclusion:I’m really concerned about how to handle this. I’m guessing everyone will advise me to go no contact, though I feel this could provoke him the most. The possibility of him trying to (and easily succeeding in) stalking or finding me scares me a lot, and I’d prefer that if it needs to it would end more smoothly on what he thinks is a good note. What do I do or say? I would not really feel comfortable involving the police unless he actually threatens me.