Lachey blames 'irrational' Simpson

Jessica Simpson's estranged husband Nick Lachey blames his wife's irrational thinking for their marriage breakdown.

The former 98 Degrees star, who split from Simpson two months ago, believes women and men have very different thought processes.

He says: "Women argue in ways that aren't rational to men."

Lachey also found buying clothes a size too big for his beloved scuppered their chances of marital bliss, adding: "They don't take kindly to that."