“The best love is the kind that awakens the soul and makes us reach for more, that plants a fire in our hearts and brings peace to our minds. And that's what you've given me. That's what I'd hoped to give you forever”

"Our story has three parts: a beginning, a middle, and an end. And although this is the way all stories unfold, I still can't believe that ours didn't go on forever"

I think this one is very much Buffy & Angel!

And I don't think the other one applies to Bangel because I don't believe they've had their ending. As they've said multiple times she will "Always" be his girl (the prom), she loves his more than she will ever love anyone else (selfless), and they want to stay with each other "forever" (anne & forever).