Snookie is an idiot. She's like "OMG, you were engaged! That's way too much commitment. I just want to have a good time." Fast forward 10 minutes to the t-shirt store: "OMG, I'm so lonely. I hate being single." *facepalm*
Maybe it's different elsewhere, but promise ring around here is something dumbass teenagers do. Rarely does it ever lead to an actual engagement.
It's unfortunate J-WOWW and Snooks are getting the spin-off. They generally have the least interesting segments in most episodes. For the record, I find the Ronnie/Sammi saga more grating than uninteresting.