Mark Zuckerberg and Facebook have significantly impacted modern relationships. Social media allows people to research an potential partner online before dating, but it also means past relationships are never fully over due to continued online interactions. Facebook in particular has changed how relationships form, develop levels of commitment, end, and linger online through virtual interactions with exes. While the impacts are still being studied, social media like Facebook both facilitate learning about others before dating at the same time that it introduces new relationship challenges around online presence and virtual interactions with past partners.