Yes, if you'd been living together for a year as of October 15th, 2022, then you would be considered common-law.
As per CRA: Living common-law means that you are living in a conjugal relationship with a person who is not your married spouse, and at least one of the following conditions applies:
- This person has been living with you in a conjugal relationship for at least 12 continuous months.
Yes, you can claim him as a dependent if he lived with you half-time.
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