There is only one ground of divorce in Scotland, that the marriage has broken down irretrievably. This can be established by 1 years non-cohabitation with consent, 2 years non-cohabitation without consent, adultery or unreasonable behaviour. The behaviour of your spouse is not generally relevant to the overall financial settlement. The exception is if they have behaved in such a way as to negatively impact their finances. For example, frittering away a family fortune on a gambling habit.