So my husband and I have been married for 18 years. He for the last several years has wanted another partner for himself. We have had several threesomes over the years but this would not be the same thing. We tried a few years ago and the woman tried getting pregnant without our knowledge or approval and he quickly ended that without me having to say anything. Him and my best friend have always been attracted to one another and he is now wanting to peruse a relationship with her. I am ok with this but I’m trying to figure out how to even begin. They have been on a few dates but have not had sex yet. I am already a little jealous of the things they get to do because they don’t have kids and we do so when we are together the kids are always with us and they are with them sometimes if I am working. My kids love her and already see her as a second mom of sorts. Any advice on schedules and how to move forward successfully is greatly appreciated!