So this song just really matches their feelings when Feyre learns that Rhysand is her mate and accepts the bond. this is probably mostly from his perspective but it fits them both I think the first couplet is from Rhysand and the second one is from Feyre.. https://youtu.be/zidm2-VRoAE
Lyrics:
Everything I ever had I let it slip away
Every dream I ever dreamed was lost until today
For I have seen tomorrow where my future lies
I see it every time when I look into your beautiful eyes
I'm hold on now (2x)
Love, don't let me go
Love, please let me know
Have you been waiting just the way that I've been waiting
Love, don't let me go
Love, please let me show
How much I want to be the one who loves you now
Maybe I was to afraid to show my broken heart
Faded in the shadows till my world just came apart
Looking at you now I feel what I never felt before
That I am finally ready to risk it all once more
Love, don't let me go
Love, please let me know
Have you been waiting just the way that I've been waiting
Love, don't let me go
Love, please let me show
How much I want to be the one who loves you now
If you've been leaving taking chances
Baby take this one with me
Can't you see what I see
I'm holding on
Love, don't let me go
Love, please let me know
Have you been waiting just the way that I've been waiting
Love, don't let me go
Love, please let me show
How much I want to be the one who loves you now
Have you been waiting just the way that I've been waiting
Love, don't let me go
Love, please let me show
How much I want to be the one who loves you now