I Think Failed Relationships Change People

I keep saying, I need to start being unpredictable, but that just isn't the type of person I am. And at my age, I just don't have that kind of mental energy to play that kind of game. So, my Partner, asks the most stupid question,(always texts) when she knows exactly what I do on a daily basis, which is, sit at home, waiting for her, because I don't hang out with anyone else. As a matter of fact, I just mentioned that in the last 2 weeks or less. I'd said, thank god for your friendship or I wouldn't have anyone. And we talked about how its so hard to trust people to have friends these days. So, I am so baffled as to why she would say, do you want to get together tomorrow or do you have other plans? When we were suppose to hang out the day before that, but then she did something else. Other plans??? Who on earth would I have plans with? I never make plans for one, secondly, if by chance I did she would know in advance and thirdly, she would always be included. This isn't the first or second time she says something stupid like that and coming to learn it means SHE IS THE ONE WHO HAS OTHER PLANS or just is looking for a way out of being here. Then says, well you could have had plans with your daughter (who works every weekend & doesn't come over here to visit unless she wants a sitter) or Shawn & Dawn(neighbors who I never have made plans with) Aside from that, forecast was calling for rain and she had to work. I pay attention to other peoples patterns and predictability or unpredictability. What I did say to her was no I am just going to be a sofa loaf and its suppose to rain. I gave her her out. Did she say, Oh I could go for a sofa loaf day? Or I miss your company? Or we could go do something? Nope. Sure didn't. Whatever. Just don't understand people at all. Even those you THINK you can count on.