I became friends with someone when we were both single, she’s now with someone she seems very smug (sometimes) and constantly makes little comments
Some examples ...
Called me a “single Pringle” 
I made a comment that I was moody last Christmas and didn’t put decorations up. Her response - yes I never put decorations up when I was single either (I never said I was moody because I was single)
Her - I’m getting a dog, me - I’d love one but I know I couldn’t handle the responsibility. Her - yes I wouldn’t get one if I were single either.
I just want to scream - yes I’m single, but that doesn’t define my life or my choices.
If you’re so happy in your relationship do you need to put me down for something I can’t control?
Just makes me sad as she was genuinely such a good friend when single and never put me down.