Retirement

My sister Jane and me when we were in our teens had oral sex. Never went past that, I would lick and suck her and she would suck me off and sometime swallow my cum. We both married and moved away from each other. I kept in contact and saw her every now and then, no sex. Jane's husband Greg got cancer and passed away several years ago. My wife Ruth had a stroke last year and need care, Jane moved in with us to help care for Ruth. I've just retired and Jane help is need. Both Jane and Ruth are petite women and she baths Ruth and I help her. We have a large shower and three of us can fit in it together, Ruth isn't aware of much. So when I started to feel up Jane in the shower Ruth didn't notice or realise what was happening. We quickly returned to our teenage ways of oral sex and progressed on to full sex intercourse. We ever include Ruth in our sex, she seems to enjoy the sex as far as we can tell. The wider family doesn't know I'm fucking Jane and are happy that she helping me. Jane is 2 years younger than me and a year older than Ruth. We all sleep in the same room, even when family is visiting, there's a king size bed and king size single in the large bedroom and nobody has mention anything about our sleeping arrangements. Early in Ruth's illness, she would wake with screaming and these have stopped mostly now. Everyone in family knows about them and thinks Jane is there incase Ruth wakes up screaming. The Younger ones think we're pass sex anyway, the others do too.