Will virtual reality and AI help us to find love or make us lonelier?

As matchmaking becomes more scientific, tech may even mimic kisses. "For those concerned that chemistry might be a vital missing ingredient, one method also incorporates DNA analysis. Dating app Pheramor, developed in Houston, claims it can help people find love according to their physical chemistry and 'social alignment'." So, will humans ever find emotional fulfilment in digital encounters? Martin Coulter explores.