Katie Price is still obsessed with Peter Andre
Speaking exclusively to Now, Leandro Penna, 27, says: 'The relationship lasted such a long time because I was understanding but eventually I lost my patience.
'I couldn't take any more.'
Leo flew to Miami last week after leaving Katie's Sussex home, while she headed to LA.
Before he left, he told us they'd split 10 days earlier - but revealed: 'The split with Katie had been on the cards for some time.'
In a statement, Katie, 34, insisted she and Leo called off the engagement as the relationship had 'run its course'.
But friends close to Leo say one of the biggest factors behind the split was her obsession with ex-hubby Peter, 39.
A pal says: 'Leo told me Pete was part of their everyday lives. He couldn't escape him.
'Not because of Pete himself, but because Jordan would always bring him up.
'She was locked in a court battle against Pete, she would always talk about him and whenever she and Leo fought, she would rant: "Yeah, go on, walk out like Pete did.
'I don't need you."
'Leo wanted to leave months ago but her brother Daniel begged him not to.
'He told him Kate was in a bad way and needed him.
'But in the end Leo just couldn't stand it any longer.'
Read the full story about Katie Price in Now magazine dated 5 November 2012 - out now!