Matching promise rings?

I’ve been wanting to buy my boyfriend a promise ring as we have been dating for over 6 months. I was wanting to get matching promise rings, but that kinda feels wrong buying myself a ring so we can have matching ones and I know we could just go shopping for them together so it’s not like I’m buying myself one but I want it to be a surprise. Should I buy myself a matching ring or should I only buy his promise ring?
Matching promise rings?
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