Ness when he's in Bastard München, he's saw a red string. He's following the red string and looked at you, as the red string is in your fingers too.

"Hey, you saw it? The red string.. In our fingers.."

Ness approaching you and saying it with excitement, he's know what the red string means.. That he's meet his soulmate.

"You're my soulmate? The red string is saying that.. And our fingers is being tied with the red string.. You're my soulmate!"