I've been seeing an older woman for 6 months. She has a boyfriend of 10 years with whom she has an open relationship. I was planning to see her on Saturday, now she's pulled out last minute due to boyfriend being at the same venue. Last time I saw her, she asked me if I'm seeing anyone else, I admitted I have ONS's, but I'm not seeing anyone else regularly. My plan now is to pursue other LTRs and keep her as a backup (since I am being treated as a backup), but I am actually considering just ending it on the basis that I deserve better than to be cancelled on last minute and since I know she has feelings for me but is scared to leave such a long term relationship with her BF. I've never let on whether I would pursue a relationship with her, because as long as she has a BF, it's not up to me to say whether I want a relationship with her or not. I honestly don't mind her having a boyfriend, I dont have time for a full time relationship, I just don't like being dicked around because of her boyfriend's plans. I fucked her in front of her BF by the way, he didnt react well. Long story.

1) i really like this girl, but should i walk away?
2) Or just not care and say "OK see you whenever then".
3) Also should I admit to her that I'm pursuing relationships elsewhere to make her jealous or not?

She said her sex life with BF is dead.

You called her an FB.

Do you want her as more than an FB or not?

If the sex sucks with her BF but she is afraid to leave without having you as the guy she clings to next to fill the voids the BF provides, I don't consider that a good plan.

My advice: Accept the fact that you provide her with a cock and good fucking, nothing more. Give her what she wants and accept the fact that she will flake because she has a bf sometimes. You're not committed to her. She's not doing anything wrong. You need to deal with the reality of your situation and decide for yourself if you want to continue it or not. You can't expect to be #1 priority to her if she is not to you.

You're right, I decided not to make an issue of it and she's cool with it. Gonna find other girls and keep her as a backup