Amanda Lenhart

From heart emojis on Instagram to saying goodbye to a relationship with a text message, digital technology plays an important role in teen relationships.

American teens don't just make friends in the schoolyard or neighborhood — many are finding new friends online. Video games, social media and mobile phones play an integral role in how teens meet and interact.

Social media networks have become vital channels for Americans' daily interactions. Our new report explores how parents turn to these networks for parenting-related information and social support.

Smartphones are fueling a shift in the communication landscape for teens. Nearly three-quarters of teens now use smartphones and 92% of teens report going online daily — including 24% who say they go online "almost constantly."

While Facebook remains the most popular social media site, other platforms — like LinkedIn, Pinterest, Instagram and Twitter — saw higher rates of growth over the past year. In 2014, 52% of online adults used two or more social media sites, up from 42% in 2013.

The internet, cell phones and social media have become key actors in the lives of many American couples. Technology is a source of support and communication as well as tension, and couples say it has both good and bad impacts on their relationships.