Do you keep it to yourself?

I had an abortion exactly one year ago. My fiancé and I have been together for 7 years, but he couldn’t stop lying to me and cheating on me so I have to be brave and call it quits. I don’t think I’ll be ready to trust anyone again or even attempt any dates for a long while, but it just popped in my head: should I tell the next person that I get really serious with about my past? I feel like it would be bad if we dated a long time and then they somehow found out about it. I feel like they could be hurt that I didn’t trust them with that information. Especially if I do end up getting married to the right person and we end up having kids; I feel like that might bring back a lot of emotional pain. Have any of you told your current partners about a past abortion? How did they react?