"8(1) In these regulations "extended family member" means a person who is not a family member of an EEA national under Regulation 7(1)(a), (b), or (c) and who satisfies the conditions in paragraph (2), (3), (4) or (5). ... (5) A person satisfies the condition in this paragraph if the person is the partner of an EEA national (other than a civil partner) and can prove to the decision maker that he is in a durable relationship with the EEA national."