My former friend was/is dealing with self-esteem and self-image problems, and it manifested through comparing herself to me and making me seem like a better/more put together/perfect person than I actually was, especially when I was always transparent about my mental health and socioeconomic struggles. Because of this exaggeration, she would do things to "bring me down a notch" and make herself feel better. It got to the point where she would make plans, not invite me, then send me pictures or call me while she was out with her other friends. She would even say things like "My family let me bring a friend on this trip in a year AND I asked so-and-so". Keep in mind that I was the person she'd cry and vent to more often than not.
The odd thing is, it really didn't make me sad or anything. Whenever she'd try to bring me down, I'd always respond either nonplussed or positively "Good for you!"/"Have fun!" because it just didn't make me doubt my self worth. After she flaked out on plans last minute, multiple times (one time leaving me without a ride somewhere) I told her that it felt like I was a convenient friend and she agreed.
The end.