The pair were involved in a shootout with police before turning the guns on themselves
In his final post, on Russian social media site VK, Denis wrote: ‘I loved you, but you do not notice how you destroyed my mind and life.
‘Goodbye all, friends and family, and acquaintances.
‘Do not worry, I will go out in style.
‘Good luck to all in your life and please do not be afraid to live as you want or you see fit. Life is for fun – this is the best life.
‘I love you.’