We are in a civil partnership. I am a filipino. He asked me where is more advantage for me, if either he would apply for british citizenship or wait till I held an eu permanent residency for 1 yr.

so if he becomes a British citizen will I be able to retain my residence card for 5 years and then after 5 years since he will be no longer a Latvian will I still be able to apply Permanent residency under EU law or should I apply for ILR?