Niece and Uncle (M/F)

I’m a 25 female and I started fantasizing about my uncle(40M) about 3-4 years ago. I’m not sure what clicked, I just know I find him very attractive and I’d like to fuck him.

A few things that are important to know:
He’s my uncle on my dad’s side.
He has a wife and 3 kids. (16+)
He lives across the street from me and my family.
He’s known to cheat, even my aunt knows it, but refuses to leave him.
He’s tall, dark, and built.
I’m short, curvy (w/ an ass), and have dark features.

Anyway, I was super horny one night and I knew he didn’t have my number since I never see that side of the family. So, I messaged him. I pretended to be a lady from the gym he goes to first to see if he would even reply back and he did. I let that go on for a while until he asked to see a picture, then I came clean. After I came clean, I expected him to block me, or to simply stop replying, but he didn’t. Instead he became very interested to know how my attraction had started and soon after we were exchanging pictures. Just as I suspected, he was hung, which only made me hornier.

We continued to talk and we were both notably horny as we continued exchanging pictures and videos for the next few days. Eventually, he asked if we could actually fuck and that’s where I became a little hesitant. Even though I wanted it, I started feeling guilty because it is wrong. So, I played along for a bit, but blocked him shortly after. At least while the guilt subsided.

About a week later I unblocked him and messaged him again. (I saw he had reached out multiple times to ask if I was ok, so I knew he was still interested.) I told him how I had started feeling and he started to comfort me telling me we didn’t have to do anything I wasn’t comfortable with. After that, the pictures and videos continued and we talked about how it would be great if we could just walk across the street to fuck each other, but since our families are here, we couldn’t.

It’s been about 2 weeks now and we’re still sexting. I want to fuck him and I know all I have to do is to tell him to book a hotel and it’ll happen, but I can’t help feeling guilty still.
What should I do?

Source: reddit.com/r/eroticliterature/comments/r7hd54/niece_and_uncle_mf