Sure the whole cheating elements is fantasy, but you are unbelievable naive if you think parents don't take jobs away from their families all the time. Like literally every military deployment in the history of the world is that. Or jobs in the lumber, mining, oil, etc fields very commonly have 3-6+ month "shifts" on site before having leave back home. Shit on the believability of the relationship drama if you feel the need to, but don't recreate world history just to justify your own story preferences.