This is The Guardian.

Welcome to Black Box, a new seven-part series from The Guardian.

It begins right after this break.

Do you dream of discovering rugged coastlines, lush landscapes and lively city markets,

then sail from Portsmouth or Plymouth directly to Santander with Brittany ferries

and experience Spain like never before.

Wind through the city's charming streets before sampling Santander's succulent, fresh seafood.

Trace your way through history

at the Palacio de Magdalena,

then absorb the panoramic views of the white sand bays.

Reimagined your Spanish adventure

and visit the Guardian.com forward slash

Brittany Ferries Cantabria.

This message was paid for by Brittany Ferries Cantabria. This message was paid for by Brittany Ferries. Hannah and Noah first started chatting online towards the end of last summer.

So I was sitting on my green sofa one afternoon.

And I just started starting up a conversation.

And the first thing he did was ask me about my interests.

And I was stumped.

You know, I was looking around my room going, okay, so do I tell me about the dressmaking?

Do I tell him about, you know, all these books? So I said, you know, I've been studying positive psychology.

How did you first get interested in psychology?

I felt kind of interested, but to be honest, it was like having a little chat at a networking event

...