...but where do they build their nest?

I love this poster, it reminds me of the saying

A bird and a fish can fall in love,
but where do they build their nest?

It's a touching, heartbreaking picture.
Lovely tagline, too: Sometimes love is right outside your fishbowl
Close enough to touch and yet never to be reached ... or maybe they just mean to remind us that we all feel like the proverbial fish out of water when it comes to the matters of the heart.
Whatever they meant to say with this, to see the tragedy of this lovers couple forces a sad sigh out of me.
But they also do say that love will find a way; I do hope that they will find theirs, I really do.