The engagement was arranged for the campaign - all for show. I never believed for one moment that the guy was ready for marriage. It was reckless of both of them to not use protection, but for whatever reason, they didn't; and now Bristol's life has changed forever because of it.
I don't know how long but watching the orb distance would give you a clue. (ie approaching to exact to separating) No, this isn't exactly a fight in the making, but a great deal of bilateral stress. It could be that the moon signs and compatibility therein could help comfort and support one...