An ex of a guy I was dating that was still part of his social circle seemingly tried to make me super jealous. She was rich, but mega spoiled and insecure, and liked to flaunt her expensive things when we did stuff together – multiple tricked-out cars, the latest iThings, expensive clothes/makeup, whatever. I noticed that she would go into full peacock mode when I was around (or maybe she was like that all the time, who knows).
I was 19, broke, and going through a rough period. I resented her because I was jealous of her lifestyle and expensive hobbies, and I also feared that she made me look boring since my life revolved around work and family problems. Hanging out with her felt like a slap in the face.
My crappy attitude about her started fights and ultimately drove a wedge between the boyfriend and I. I still kind of regret being so immature over the whole thing.