"I feel stupid and ashamed about taking off my ring. I acted too hastily out of anger and I'm sorry. I love you and I feel like your husband. I miss my ring and I'd like to wear it again."
Unless her jewelry box has a big padlock on it, I don't think you need to even do that. Just put it on, man.
It's your ring, your finger, your decision, so be decisive!
Thread #10 22 year M, MLC, Piecing since 1/07 Goal: Live with confidence & enthusiasm!