I am married been with hubby over 20 years. He has a female friend he met in work about 7 years ago. We have had a few problems over the years he has always found her a good friend. The friendship has been purely platonic I think. We met up a couple times with her and her husband and we visited her when they had a baby but otherwise I didn't really know her.
Her and her husband split up last year and we started meeting up for coffees and nails and got friendlier though I wouldn't say she was a close friend. She got back with him but they split up again recently.
Last weekend oh was supposed to take me to cinema but then said he was meeting up with her as she was 'lonely'
This weekend we had arranged ages ago to meet up with some old friends of ours (a couple). My hubby invited her and she wants to come! I don't want her too - it's a couples night, she doesn't know our friends and I was looking forward to catching up with them and also want my husband to myself please! Do you think I am unreasonable if I say (nicely) that she can't come?