Should I give in?
I have an older (much older) half sister from my dad's previous marriage. She's almost twice my age, I'm 23 and she's 41. We weren't very close before, and I don't want to get into the specifics of how it happened, I'll just say that her being recently divorced and my being broke led us both to sharing a roof with our father during the quarantine.
I had rarely socialized with her as a sister in such a day to day context before, so at first it was weird but made me realize a few things. First, that she's gorgeous. Second, that we have mad chemistry. We get along well, and over the last few months we started growing closer bit by bit, to the point that our father would go to bed and we could continue talking and drinking for hours and had a blast.
Blame isolation and accumulated horniness or whatever, but I began to feel seriously attracted to her, to the point of jerking off thinking of her. I know it's a morally grey but mostly black area, but I'm betting on the truthfulness on at least some of the success stories I've read here to seek advice, because I feel this may be reciprocal. I'm not sure if it was always this way and I just hadn't noticed, but it looks that she's being overtly more sexual towards me, being kinda flirty, leaving her room's door open while working out in tiny or tight outfits, letting herself be seen in just a towel. Her room is next to mine, and I'm pretty sure I've heard her masturbating for several nights now. I don't know if it's advisable to be more forward and risking making things VERY uncomfortable for the remainder of the quarantine. Even if I decided to give in, I'm not even sure how I would approach this... any suggestions?