Villas-Boas decided he needed to move on and forge his own path in the coaching game and has made it clear that his working relationship with Chelsea's Mourinho had to end at some point.
"I don't lose any sleep," said the Spurs boss. "Our break-up point was because I was full of ambition to give him something extra and I wanted further involvement from the job I was doing at that time.
"I felt I could give him much more. But he didn't feel the need for somebody near to him or in another position as an assistant, and because of that it was decided that it was time, after Inter Milan, to continue our careers (apart)."
He added: "We had a great personal and professional relationship before that we don't have now.
"I don't think we need explanations. But our relationship broke down. I think we have the mutual respect for each other and we understand what we have been through cannot just disappear, but it's not like it was before."