Complex sentence: Archie was left heartbroken in series 2 when Katrina got together with new Head Ranger Fergal MacClure, and when she agreed to leave Glenbogle to live and work with Fergal in New Zealand.
Split into simpler sentences: Archie was left heartbroken in series two when Katrina got together with new Head Ranger Fergal MacClure. Katrina agreed to leave Glenbogle to live and work with Fergal in New Zealand.