a) has been living with you in a conjugal relationship for at least 12 continuous months;
b) is the parent of your child by birth or adoption; or
c) has custody and control of your child (or had custody and control immediately before the child turned 19 years of age) and your child is wholly dependent on that person for support.
In addition, an individual immediately becomes your common-law partner if you previously lived together in a conjugal relationship for at least 12 continuous months and you have resumed living together in such a relationship. Under proposed changes, this condition will no longer exist. The effect of this proposed change is that a person (other than a person described in b) or c) above) will be your common-law partner only after your current relationship with that person has lasted at least 12 continuous months. This proposed change will apply to 2001 and later years.
Reference to "12 continuous months" in this definition includes any period that you were separated for less than 90 days because of a breakdown in the relationship.
A child cannot be considered the recipient of support payments for income tax purposes.
Note
Once you have been separated for 90 days (because of a breakdown in the relationship), the effective day of your separated status is the date you started living separate and apart.