Is the song Cuckoo (Still Corners) about cuckoldry?

There is this cool song called Cuckoo from Still Corners, a young couple of musicians, beautiful and talented. Due to the fact that english is not my first language, I can't decipher if Tessa Murray is singing about the cuckold lifestyle or if it is only my imagination.
I have avoided this question for a long time because I have prefered the posibility that Tessa herself could be a cuckoldress singing from her own experience. But after so much time of personally taking this song as a Cuckoldry hymn, I will take a chance with reality. What do you all think about it?
cornido

The lyrics are very vague. I guess you can interpret them anyway you want.

It's like we're going cuckoo
Me and you, stuck in a time machine
That was just a dream
Just go down
Just go down
I'd like to reach your mind
Can you hear mine
It's also very cuckoo
Me and you
We never meant obsession
We should have high confessions
This feels so out of time
Walk and left behind.
Just go down
Just go down
Ah ah ah ah ...