Can we get promise rings in CAS?

That is a grand idea I like the option of how the friendship bracelet that can be with the promised rings then you can go into cas it can on the left hand but middle finger also still like the option of it being locked in CAS until exchange the rings as well with it. 

Gameplay for Promise Rings could be handled same as Friendship Bracelets [Growing Together] or jewelry from Crystal Creations, as a personal inventory item that you click and select the Sim to bestow the ring to.

However, important to note that wedding rings don't even automatically appear on hands after proposals or marriages either. Have to go into CAS for those.

True...

I'm mean teens can't get married or have kids in the game but they go to college early with High School Years and University.

They can have a romantic life along with Mess Around instead of Woohoo and experience all the love triangles but a promise ring can be any ring available in CAS at this point in the game. 

I agree.

 I would want a specific promise rings that says it in CAS or locked until the teens exchange promise rings then you can unlock it and have your Sims wear it if the simmer like it and if the promise is broken they can sell it, dispose it by throwing it away in trash, on the round, in the ocean. 

Without the added gameplay, any ring in CAS can be a promise ring. Do you want some particular style? From what I've gathered from google, promise rings are similar to engagement rings but cheaper since they are for teens and their budget. So really any ring could be a promise ring, depending on the sims' taste and such.