My wife has an older half-sister who is 13 years older, she’s in her 40’s now. I never thought of her as super attractive, but she’s tall, blonde, somewhat fit, and has nice, good-sized tits, not huge but she fills out a sweater well. My wife and I have not spoken to her in over a year now, due to ongoing issues between them and my SIL’s generally shitty personality. The best way to describe her would be to call her a complete bitch.
Because of her personality I never found myself attracted to her, until one night my wife and I were fooling around. One part of my wife and I’s sex life is talking about other people we’re attracted to that we know and fantasizing about what we would do with them. One night, my wife asked me if I thought her sister was attractive. I hesitated for a moment, then I asked her if she wanted me to be completely honest and she said yes.