Mourinho told the News of the World: "My relationship with Roman is fantastic.
"Everything is perfect. He's very friendly and I'm so pleased we managed to maintain relations.
"Human relationships are very important, that's why I am very, very happy that everything has remained so amicable.
"It was hard to leave Chelsea, hard to live without Chelsea but it was better ending it the way we did than going on for two to three more months and falling out for ever. It was better for me, better for him, better for everybody.
"We still talk and text each other - but we don't talk about football all that much. We talk about this and that, whatever is happening with us.
"I don't ask his opinion about my professional situation and he doesn't ask me for advice with Chelsea."
Mourinho added: "Roman is as committed to the club as ever.
"Maybe he is not spending the same amount of money as before but that was always our aim for Chelsea.
"That's the direction we were already taking. I remember when I was talking with Peter Kenyon preparing for that last season. It was the first time that Chelsea's transfer income had been bigger than spending. We had sold Arjen Robben to Real Madrid for £24m and also Glen Johnson and Lassana Diarra.