Our Dirty Secret

i just wanna put it out there that my older half-sister and i are in a sexual relationship. it's been our dirty little secret for over a year.
i won't get into details of how it started, but it's a very intense relationship. once we started, we couldn't stop or even slow down. she was frustrated with her marriage so she just decided to end it so nothing would get in the way. she says she's sexually and emotionally much more satisfied with me. i don't care that she's much older (she's 38, but so obsessed with her self-care that she's so fit and hot and even looks younger than me). I'm addicted to fucking her, but i also love her.
it's our secret, no one else know, not even our closest friends. i guess some people suspect because we're way too close. we meet up "for lunch" way too many times every week and we "crash" in each other's places too frequently. i know it's wrong and that she's my sister, but i can't picture anything that's sexier and more loving that what i have with her.