If the other tenant was given a notice but you were not, then any attempts by your landlord to evict you should be ineffective. The Washington Residential Landlord Tenant Act is specific on service of notices to terminate a tenancy, and all tenants must be given a notice. For example, a landlord must give a copy to a husband and wife, not just one. In your case, you each have distinct rental agreements as well, so that would also require that you receive your own notice if there was any attempt to evict you as well. You can also always call you landlord to confirm that you are not being asked to vacate.
Answered on Apr 17th, 2017 at 8:50 AM