NO NO NO!!!!!! stop keeping this myth alive - there is no such thing as a common law wife or the status of such after 2 years.
I can vouch for this. 11 years together, two kids, sold my cottage to help pay for renovations on his (bigger) house - my famiy even gave him money for renovations - against my wishes - but he took it. I worked the whole 11 years we were together, moved in all my furniture when I sold my place, decorated, renovated, improved (it was a dump when I first met him) .. and I walked away with fuck all. Literally not a penny. We also had a business and I got nothing out of that either, because we weren't married.
The only way I would have got anything would have been more him to do the honourable thing (yeah right) or for me to fight it through the courts and I would have had to show how his property had increased in value - what value I had added in the time we were together. I would have had to prove all that, and then I might have got a few grand out of it - it just wasn't worth the months and months of fighting it would have taken.
I have no regrets about leaving my ex, but my life since has been very, difficult financially. Live in a rented house, no savings or assets, and literally scrape by month to month. I saw him the other day - having not clapped eyes on him in 10 years ... driving up the road I caught a glimpse of this bloke in the car coming towards me and it was him - driving a fucking Range Rover!
I urge anyone who is not married to their partner to protect themselves financially - through legal agreement, or stop paying towards other people's mortgages or putting up money for repairs and so on. Have a rental agreement instead or something of that nature, but don't end up like me.