There can be a millions of reasons behind thinking out what this guy's intentions with you! I don't think you should overthink this situation! This guy's what? 40 years old and maybe at that age, he might have moved there recently and knows no one in the town okay but still he might have any sexual intentions with you coz you never know! It should be advisable for you to do a background check on this friend of yours! and if everything's cleared up! He might be a decent polite person e.g a retired navy officer. Still you need to know his background or seek help from a senior. But without knowing entire context, It's still an early stage to have committing this thoughts. But with my experience you'd be amazed!
I was hanging out with my buddy one day. We went to the theatres and booked our seats at the back and we arrived a little late and wanted to know the beginning of the plot. So, we asked a mid 30 day who was really friendly and polite with us and we kept talking and vibing together. At start, we're like not very new to the city but then this guy seemed nice and have a good IT hiring job and then our mind struck, what a nice guy to network with as we were still in college that time so could have been great help for some internships. Then we exchanged our numbers and my friend was seeming uninterested, so, he stopped talking with the guy. I kept talking with the guy and one day I got a very random kiss emoji and then I was little surprised like you! Then I consulted my friend and he said it might be some typo he might have done, so, I ignored. This guy wanted to meet up us again and we're like, since he has a remote job, so, he might be alone in the city. So, we hangout and then in real life, he was a very professional and friendly guy but on chat he was little salty. But one day we again met and it was only me this time as my friend was out of station that day. This was the absolute turning point!
Then we met at a bar and we were very drunk later and then I was almost passed out and then he took me to his house and he was sleeping along with me in his bed that could be felt that moment. Then I got a little conscious when I saw him licking all over my belly button and my belly was all wet and his tongue was inside my belly button and he was poking it really hard and really sweaty. I was still feeling drunk so I didn't said nothing and he kept sucking my belly button and then I woke probably 3 to 4 hours after that. But I had still the whole memory about these moments. So, I knew it but he was very unhinged about it and kept making breakfast and talking nonchalantly as if nothing like that happened. I felt devasted that morning and ashamed about what happened. I left his place asap and I never went back there, blocked him and never connected with him ever again.
But this is kind of a wild example to base off this situation. So, better be safe than sorry. As of my experience, I would have ran away asap. But hey! It's your life, at the end you have to make decisions. So, think wisely but not be stupidly overthinking!