Originally Posted by StarGazer
To the question in your headline- it sounds as though you are poly, although the insecurity is possible.
However, I disagree that what you had with Sebastian was imposed upon him. Sebastien said you could have sex with women. .
I'm sorry again. Getting the green light to have "just sex" with other women reduces the use of polyamory in this case as a tool to have casual sex. Sebastien didn't have polyamory imposed on him as the nature of the agreement is not polyamorous by definition. There are some very knowledgeable polyamorous people on this forum (I don't include myself in this as I am monogamous) who can lend some advice on this I am sure. I'll step back from this one now and let more experienced people help.
Take care and I wish you the best