My Mum caught me update

I'd been fucking our divorced neighbor Yvonne for months and then my mother Glenda saw me fucking Yvonne in her back yard. After getting back home, Glenda asked how long I'd been fucking Yvonne. I lied and said a couple of weeks, anyway Glenda told me she also horny and had to masturbate herself and I could have asked her. So we started fucking and I also continued fucking Yvonne as well. Glenda isn't dumb and soon knew I was still doing Yvonne. As Yvonne hadn't changed since I'd started fucking her (Glenda), so she asked straight and I confessed I was and really enjoy sex with the both of them. The following Saturday morning I had finished as usual and was in bed asleep and Glenda came in woke me. Telling me to join her in the living room, I walked a bit sleepy in just in my shorts and Yvonne was there also. I was a little shocked at first, Glenda then told me that she had visited Yvonne and had also slept with her and now they wanted me to join them in a threesome. I came to my senses by now being totally awake and we went to Glenda's bed and had great sex together. I wasn't going to work again until Monday evening and Glenda didn't start till Monday morning. So the three of us had a lot of sex, then on the Sunday afternoon. Glenda and Yvonne told me they had decided for us to live together. Yvonne owned her house and we rented, Yvonne asked Glenda to move in with her and Glenda had agreed. I was then asked was I okay with that and I said yes. We finished moving in last Sunday and share Yvonne's new king size bed. Everything is great and they both want me to find a girlfriend my own age, but there isn't any real hurry.