Our parents had passed away quite a few years ago so now there was just my sister (Joan), my brother (Greg) and myself (Mark). Joan was about 6 years older than my 45 and Greg was another 5 years older than Joan. We weren't really close as far as visiting and talking regularly but we were always there for each other if something came up. All our children were grown up, moved out and some had kids of their own.
It was January and Greg and his wife were doing their usual 2 months in Mexico and I'd just gotten back from a couple of weeks away when Joan called and I could tell right away that something was wrong. She told me she'd had a minor stroke just after I left and was back at her townhouse but couldn't fully look after herself yet and was wondering if she could stay with me until she was able to recover properly. We'd both been single for almost 10 years, I was divorced and she was widowed. Seeing as I was by myself in the house, I said that would work fine and we made arrangements to get the stuff she needed moved over.
It took a bit for both of us to get used to sharing a house with someone again but pretty soon the little glitches had smoothed out and everything was going well. Living alone, I'd gotten used to wandering around with nothing on but I got out of that habit pretty quickly and it only took a few days for her to realize that the entire bathroom counter wasn't there for her skin/hair/nail/face care products. She used the spare bedroom on the main floor and I kept my bedroom on the second floor. Neither of us were late night partiers, we enjoyed the same foods and while neither of us were neat freaks, we were both reasonably tidy people. She really wasn't supposed to drink because of the meds she was on but as she said, "A drink or two's not likely going to kill me and damn I need one sometimes." so quite a few evenings were spent with the two of us having a few drinks before bed.
She quickly found that soaking in the jacuzzi tub helped with the numbness, tingling and intermittant muscle spasms she was having so it wasn't uncommon for her to go have a soak before bed if it was one of her bad days. One day, she'd been to the hospital for more tests and between the poking, prodding, waiting and blood work, she was feeling really crappy so by 9pm she said she was going to run a tub and have a soak before heading to bed. I told her to go ahead and I'd be going to bed soon myself. I was already in bed when I heard the water shut off and figured she was in the tub so I was a bit surprised when I heard her call up from the bottom of the stairs, "Could you give me a hand into the tub? I'm really off tonight and don't want to fall."
I said sure, grabbed a housecoat because I wasn't wearing anything and went back downstairs. When I got to the bathroom, she was standing by the tub and with a definite trace of embarrassment looked at me and said, "I guess there's no way to do this without you seeing me naked" and dropped her housecoat.
Yes. she was my sister and was 51 years old but I quickly realized that while there was a bit of sag here and there and her c-cup breasts certainly weren't as perky as they'd been years ago (she'd always looked great in a bathing suit at the beach), she still looked damn good naked! As easily as I could without getting either of us too embarrassed, I got one arm around her shoulders and one across her belly to steady her but realized there was no way I could properly brace myself the way I was standing so I straddled the tub with one foot in it and one foot on the floor. That worked ok except that she slipped slightly getting in and the hand that I had on her belly ended up cupping a boob before she got her balance again. I gave her a quick, "Sorry!" but she just laughed and joked that it was the first time her boob had been grabbed in a while and at her age, she was happy to take what she could get.
We both laughed a bit at that and I got her sitting in the tub. As it was, it was me that slipped next as I tried to step back out of the tub and I pretty much fell in but at least managed to not land on her. When she said, "If you wanted to join me, you could have just asked!" we both ended up laughing even harder so I said, "I might just as well, I'm soaked and you'll likely need help getting out anyway" so I chucked my wet housecoat into the sink and settled back into the tub.
Now hormones being what they are, even though it was my sister, the fact that I knew she was naked and could easily see her boobs above the waterline caused me to start getting hard so to hide it, I reached back and hit the jets. I was trying to will myself soft again but it didn't work. It wasn't a huge tub so our legs were touching and short of both of us keeping our hands on the edge there wasn't a way for me to avoid my hand on her leg or her hand on my leg. I was enjoying the accidental touching and honestly, I took advantage of it a few times to rub my leg against hers as well as touch her leg with my hand. What surprised me was that I was pretty sure that she did the same thing to me a few times.
Just to break the silence, I asked her if there was anything she'd either have done differently in life or that you wished she'd done. We'd always been pretty open with each other so I wasn't surprised when she said, "Not really but I do wish I'd gotten laid more often!"
That got another laugh from both of us and somewhat jokingly I said, "Is that a statement or a suggestion?"
All of a sudden everything seemed to slow down as neither of us said anything for a moment and then I felt one of her hands on my leg except it was a lot higher than it had been before and looking right at me she quietly said, "Have you ever thought of having sex with me?"
I'm pretty sure the look on my face gave her the answer but I still said, "Sure, what teenage guy with a sister doesn't think of that somewhere along the line?"
"I knew that, I meant more since I'd been staying here?"
Again, the look on my face must have given me away because before I could say anything she nodded and said, "So have I."
Both of us could likely have said more but instead we both shifted closer and her hand was soon on my cock and mine were each cupping a boob except this time there wasn't anything accidental about it and we both knew it. Seeing as we were both fine with where things were going, I said, "here, turn around and lean back against me."
She did and then I was able to play with her boobs and nipples with one hand while I slid the other one between her legs to feel her pussy. I was kind of surprised to feel that she was totally smooth and she must have noticed because she whispered, "I had it lasered off years ago"
As I touched her, I could almost feel her melting against my chest and after a few minutes of fingering her slit and massaging her clit, she stiffened, moaned, and quivered a bit as she came. With a whisper she said, "Oh my god that felt good. I'd almost forgotten what it was like to have fingers there other than mine."
In my best fake British accent I replied, "Most happy to be of service" and then we both chuckled a bit.
After relaxing for a few more minutes, she said, "I think we should get out now."
"Had enough of the tub already?"