Paula Patton is ''livid'' that Robin Thicke is considering marrying April Love Geary.

The 39-year-old actress - who divorced from the 'Blurred Lines' hitmaker earlier this year after nine years together - has reportedly been left fuming after she found out ''gold digger'' April may become the new Mrs Thicke.

A source said: ''She is beyond livid that he is even considering marrying this girl. Paula cannot stand April, and thinks that she is a total gold digger, but she is just keeping her mouth shut for the sake of their son.

''What makes her most upset about all of this is that Robin and April have a sexually-monogamous relationship, which is something that Robin always said he would never have.''

And April has reportedly already got the approval of Robin and Paula's son Julian.

The insider added to ''Robin and April already live together. [She] has done everything she can to weasel her way into his heart, as well as his son's heart, and it worked because they both adore her.''

Meanwhile, Paula previously admitted she found the split from the 38-year-old singer ''challenging''.

She said: ''It's been a long year and a lot of challenges but I've grown quite a bit and just getting used to change.''