Soooo, you’ve been talking to another woman for 6 years, never met her, yet were planing a cruise together. You allowed the side to see the engagement post, which was a rookie mistake. You could have set your status so only certain people can see it. How did you THINK she was going to react? Say congratulations?
By the way, congratulations
You have to block her, because if you do continue to talk to her, she’s going to tell your fiancé, or keep posting subliminals. She was shady to leave a laugh on the post in the first place. But ultimately, this is all a result of your actions.