I’m (F) a chronic over-thinker and I’m working on improving that. I find it’s got worse since being in a poly relationship; I can’t help but think they like the other person more, etc.

My current over think issue is that my partner (F) showed me a link to an event- no asking if I wanted to go or who with. I said it looked really cool. She said she booked 3 tickets - me, her and her other partner (M). This would all be ok except this. My partner has a primary partner (pp) who knows about me. The pp does not know about this other partner yet. Last time we all went out, she said she was going out with me. Currently she has a lot of NRE for this other partner and she finds ways to meet him a lot.

I’m overthinking that the only reason she has asked me is so she can go out with him to this event and say she’s going with me. I’m trying to think about it logically and the alternatives to this, like she actually wants to go with us both but this voice keeps coming back in my head.

Does anyone else get this? If so how do they deal with it?

Update: So I said to her that I need to check if I can make that day. She said that ok and that she can take someone else like her daughter. I said why don’t you take your other partner. She kinda said yeah in a funny way which meant no. She then said she had the combinations of me, her and the other partner or me, her and the daughter or her daughter and her. So her and the other partner were not an option for her; she’d only be going with him if I was going which makes me think I’m the excuse she’ll be using.