Congratulations! You have beaten the odds and managed to make it to the "post" part of post-apocalyptic. Unfortunately, like most of the planet, your chosen mate has become less post and more past. Take some time to mourn, stay away from implements of self-destruction, and come to grips with your new status as a Single Survivor.
Not to rush you, but time is not exactly an abundant commodity. I hope you have come to grips with being single again because we need to get you back out there and dating! (BTW: if your ex is now a zombie, you cannot simply change your relationship status to “it’s complicated.” That's dangerous, dumb, and cheating.)