In the US, overall incidents of sexual violence have fallen by 63% since 1993, according to the Rape, Abuse & Incest National Network.
By contrast, the UK’s Office for National Statistics has recorded an increase in sexual assaults since 2012.
In the US, the FBI collects data about so-called romance fraud and about online “sexploitation,” but data about physical assault linked to dating sites is scant.
The National Intimate Partner and Sexual Violence Survey, conducted by the US government, last collected data in 2011 and will publish an update this year, but doesn’t ask questions about online dating.
John Leech thinks the situation is new, and dangerous.
A local council member in Manchester, in the north of England, Leech this year launched a campaign to make online dating companies commit to keeping their users safer.
The trouble is that statistics on crimes linked to online dating are sparse.