Not unless that threesome leads to you developing a more permanent relationship with the third person. Being poly involves more than sex, which should be obvious by the amount of information here in this forum. Read a bit farther and you'll find out how much deeper the connection goes for poly folk!

Having a threesome makes you an adventurous couple, possibly a secure and swinging couple, and yes it could lead to you actually deciding to open your relationship to the possibility of polyamory, but just having a threesome doesn't make you "poly".

There are many reasons...probably as many reasons as there are poly groupings. For us it was just a natural extension of our relationship, Sigel and I to include Arch. Honestly, he fit! We had an amazing relationship but when we met Arch it just kind of added more. We were open to what he had to offer and it has been a wonderful addition to our lives. We each have a second partner to rely on, to love, to grieve with, to celebrate with. We have another co-parent for our children. Given that we, Sigel and I, cannot rely on our birth families to care for our children in the even that we can't, having Arch there makes us feel very secure. He has helped us raise our children for well over 10 years and we are co-parenting a son. The reasons are numerous as to why we chose to do this.

We decided to have threesomes pretty much from the beginning of our relationship because it excited us and made us feel like we had something special we could share. We created memories we can relive later that make us smile...we also tore each other apart nearly over it. I don't regret doing it, I regret not being honest with myself about how much I enjoyed the experiences. I regret the guilt I forced myself to feel.

Also, NO most emphatically it doesn't make you boring because you have never had a threesome! I have no idea how red hot your sex life is but you are here so it has to either be smokin' or getting there! You have been happy with your partner, I'm inclined to believe you should celebrate that! Some of the downright kinkiest people I know have never invited me (or anyone else) into their bedrooms.