Every Resident - Bill of Rights for people who live in Ontario long-term care homes
22. Sharing a room
"Every resident has the right to share a room with another resident according to their mutual wishes, if appropriate accommodation is available."
In other words...
You have the right to share a room with another resident, so long as you both agree and space is available at the home.
The person you share with could be just a friend or someone you are romantically involved with. You can choose to share your room with someone of the same or opposite sex. It does not matter whether you are married to each other or not.