I'm no writer so feel free to use this.
Love at the Border
Any main characters can be use. Christian or Anastasia
They live in a different country, one's parent is sick and needs to cross the border every weeks to see them. The other is a border patrol, just doing their job. But it was love at first sight, unfortunately they would probably never see each other again. As fates would want, the next week without taking the same lane, they met each other again. Over time, they always took the same lane. The others co-workers became suspicious. Love bla-bla-bla