Someone Who Is Practically A Stranger Wants Me To Inherit Their Home When They Die

So just as the title says. This happened yesterday afternoon and is probably the weirdest thing that has happened to me. I really would like the opinions of Internet strangers because I just really don’t know what to think in this situation and would like to hear all opinions/thoughts/advice.

Some background:

I work at a local small town winery on the weekends as a second job. We have a regular who comes in once or twice a weekend - he never drinks alcohol, just orders a soda every time. I’ll call him Jim (not his real name of course).

I only started back in March of this year so it hasn’t been too long of a time knowing/talking with Jim, but when he comes in to the winery I make a point to chat with him. He’s a nice guy, probably in his early or mid 60’s I’m guessing. He has made “you’re cute” comments when I first started, but nothing really excessive to the point where I’m actually uncomfortable. If anything it’s just a little awkward, but I can tell he is lonely. He lost his wife a few years ago to cancer and they/he never had kids. His parents are also passed, and the only family he has are his sisters. A few weeks ago he asked me if I’d like to go to dinner with him, and I politely let him know that I don’t think my boyfriend would be too happy about that and we both laughed and moved on from that question. Dinner wasn’t brought up again until yesterday.

So here is what happened:

Yesterday Jim came in and it being a Sunday and bad weather we were really dead. As in it was just me and Jim, so I was chatting with him as usual. He brought up going to dinner again, but this time he told me the reason why he wanted to take me to dinner was so he could talk to me about inheriting his home when he dies. Obviously I was incredibly surprised by this question. He explained to me how he has no family other than his sisters to inherit his house when he dies, and he “hates”/does not get along with his sisters. So he doesn’t want them getting the house. He told me he “thinks I’m the perfect person to inherit his home” and that he has been thinking about asking someone this for years. He gave me his lawyers business card and the info of his house as well and asked me to think about it. He said I could sell the house or rent it, whatever I would want to do. He just doesn’t want his sisters to have the house. I didn’t know what else to do/say other than “I don’t know to say but I will think about it, thank you.”

I haven’t called the lawyer yet but am thinking about doing so just so see what in the world is going on. So, what do you guys think? What legal repercussions could come from this? It feels like it would wrong to say yes to something like this - he is practically a stranger and I haven’t done anything to deserve this house. Would love to hear anyone’s thoughts and opinions. Happy to answer any questions as well.