gf cheating or just disreapectful??

Yes she is up to something. So I suggest you move on. You do not need someone like that. She does not seem to be a nice person.

I was a girl once, by that I mean now I'm a woman, and I've been around enough to know one of two things are going on here (or both):

a.) She's no longer interested in the relationship and is only making time in her day for you when SHE wants to and based on HER schedule alone. This is what friends do, or uninterested sig others, so the outlook doesn't look so good.

or

b.) Yes, she could be cheating, but I wouldn't jump right to it. The first bit sounds more likely, but again, I'm just going off of how I was and what I saw as a young girl.

Didn't want to dampen your spirits, but I know how to feels to be sitting on the brink of a failed relationship and don't want to see someone else suffer.

Well she might just not like judo, and her friends might already be over so she didn't reply. Give her a day to reply and if she keeps avoiding you then I think you should talk to her about why and go from there.

No one knows the story better than you. If I'm honest, both are very real possibilities but I'm just going to go with disrespectful since I cant come to a conclusion. You just need to sit down with your girlfriend and talk to her about it. From what I see your relationship lacks the most important element, Communication.

Or not interested in you. My last gf did the same thing. I tried calling her and she'd have an excuse and why she didn't pickup the phone or she would change dates but not tell me. My advice? Confront her about it, it might force a breakup or force her to respect you more.

She might not be a big fan judo and don't worry shes probably busy

I can't read her mind, but I do think it's quite rude of her to keep changing plans at the last minute. It's understandable to change plans once in awhile, but to do it every time and to not tell you until the last minute when you remind her is out and out rude, inconsiderate, and extremely selfish of her.

I wouldn't stand for it myself.

She probably does not want to be with you or she is seeing someone else. But do not do anything crazy just talk to her about and be straight up and tell her how you feel.

you asked a party girl to judo. if she aint cheating she will be just out of boredom.

well if shes cheating she is disrespectful, i would move on from her. You are never going to be happy if you are being treated like that, and being put on the backburner