They'd been together for between 3 and 4 years, my mum was 36 or thereabouts and my dad was 38. It was a year and a half later for my brother. They married when I was 6 and divorced when I was 14. I think if I hadn't been conceived they wouldn't have been together that long but my mum had been told she couldn't have kids so I guess they weren't planning on becoming a family. I'm guessing having kids kind of trapped them together if anything because they both have strong views on family and appearances. I can't ever remember them being happy together and the years leading up to their divorce were exceedingly hostile.
They both now have their own long term partners (6 years and 6 and a half years).