Hello. I am sure I am far from the first person to be in this situation and I am really trying to understand how this all works and what it means. I've been I. A relationship for almost 5 years where we have swung together on occasion. I have had no other relationships but he has had other girlfriends. Some know I exist and others do not (bad I know). Well, now he wants to bring in another woman and try being poly. I know this woman and a few years back we spent time together the 3 of us. It was a total disaster primarily due to her immaturity at the time and trying to make it into a contest. Now, almost 4 years later they both want to try a poly triangle including me. First of all I am apprehensive since the last go was such a monumental disaster (ptsd). And also, yes in very insecure and don't get the idea that him loving her or anyone else doesn't mean he loves me less. I am really trying but I don't know if I can do this. I have really bad anxiety problems and an terrified of what might happen. Help please because I do love him.