Apartment Neighbor Fuck

I live in a medium-sized apartment building, mostly with working class people, though I'm a young professional. A few months ago I met an older woman at the mailboxes who apparently lived with a daughter who took care of her and her own son. It was clear the woman had some kind of mental disability that prevented her from driving or managing her life well. She often seemed a little spaced out and not terribly intelligent but also mellow and easy-going. She was large-breasted and a little rotund but not fat, with brown curly hair. We started talking about movies and she mentioned that she had a bunch on dvd that I could borrow, so I followed her to her apartment, the place was a bit messy but not dirty. I borrowed about 4 and said I'd bring them back soon. She said she didn't do much most days except watch tv or movies, and had once been married but didn't date much so she was glad to meet me.

I got through them 3 days later and came back one morning (I don't work every day and have a somewhat variable schedule). Linda came to the door dressed only in a very thin nightgown through which I could easily see the outline of her boobs and nipples. The tv was playing some game show but she turned it off to talk to me, and at her invitation I was soon looking at her collection again. She stood next to me and leaned into me just a bit so I could feel her breasts against my arm. I mentioned that "that's nice" and pushed toward her just a tiny bit. She responded by moving left to right just a little bit, rubbing against me, and then I moved up my hand to cup her breast. She suddenly stood still and said nothing as I squeezed her melon, then moved my other hand to touch them both through her gown. Eventually she said she liked how I was touching her, then sat down on the couch and basically just spread her legs, her beaver showing boldly under her short gown.

I touched her pussy lightly, and she said that felt good too. I didn't feel like beating around the bush, so as soon I moved a little lower and felt she was wet, I unzipped and kneeled in front of her, sliding my 6 inch dick into her hole. She said she liked that too, even though she didn't cum or show much reaction really. In less than five minutes I was ejaculating powerfully into her vagina, then pumped a few more times before grabbing a shirt from the floor to clean off.

Since then I've gone back to visit about once a week. I tried getting her to give me a blowjob, but while she was willing her technique was terrible, often pushing me out with her tongue, and she refused to let me cum in her mouth or face so I soon learned not to bother and just used her pussy hole to relieve myself in. I'm not quite sure what she gets out of this, as she never cums or goes out of her way to invite me, but she never refuses, and this kind of instant availability feels one-sided, but hard to resist.