Obviously for these people, these relationships were a lot more successful.
Workplace romances may be tricky, but 12 percent of people met their spouses through work, so it's not exactly uncommon.
For those seeking same-sex partners the swing is even more striking.
More immediate because instead of being used to plan future encounters, or to chat at a distance, they can be used on the fly to find someone right here, right now.
More personal because the phone is intimate in a way the keyboard is not, camera-ready and always with you. Many people now feel quite happy swiping left or right on public transport, gossiping to their friends about potential matches.
As early as 2010 the internet had overtaken churches, neighbourhoods, classrooms and offices as a setting in which Americans might meet a partner of the opposite sex.
Bars and restaurants have fallen since (see chart).
As befits a technology developed in the San Francisco Bay area, online dating first took off among gay men and geeks, but it soon spread, proving particularly helpful for people needing a way back into the world of dating after the break-up of a long-term relationship. The 2010s have seen these services move from the laptop to the phones with which young people have grown up.