Sharing Secrets and What To Do with the Ring

Q: I had an abortion a long time ago, while I was in college. I have had just one serious boyfriend since then, and it wasn't an issue. But we broke up after seven years together. Now that I finally feel ready to get back on the dating scene, I have no idea what to tell guys, and when (or if) I should disclose this information. I don't want to scare them off prematurely. I'm at peace with my decision, as it was the right course of action for me at the time. But I know what a divisive issue the Big A can be for people. Can you help? – Roe vs. Dates