Advances of monies between family members may become an issue at the time of dissolution of marriage.  The recent Barber v. Magee decision provides an excellent discussion of law pertaining to inter family advances of monies. Spouses borrowing money from their parents or other family members should follow the recommendations mentioned therein to get a fair calculation for equalization.
http://www.canlii.org/en/on/onsc/doc/2015/2015onsc8054/2015onsc8054.html