United Kingdom, April 11 -- Jax Taylor thinks Brittany Cartwright can't get over her "anger" at their past.

The 'Valley' star - who has been sober for more than three months and was diagnosed with bipolar disorder while in rehab - suggested co-parenting three-year-old son Cruz with his former spouse isn't always easy and he wishes she would recognise how much he has been trying to change for the better.

Asked about co-parenting, Jax told E! News: "It's day by day right now.

"I've done so much work on myself and I feel Brittany doesn't see the work sometimes or she's just very angry about the past and can't look towards the future and see that I am bettering myself."

Cruz was diagnosed with autism last October but the news was only mad...