Where does your relationship sit in the data?

The most common age gap in heterosexual relationships in the US is one to two years, with the man slightly older. Pew Research data and US Census records show that roughly 73% of married couples are within five years of each other. Age gaps of six to nine years account for about 15%, and gaps of ten years or more apply to roughly 8% of couples. Same-sex couples show smaller gaps on average. The cultural narrative around 'half your age plus seven' has no statistical grounding, but research from the Atlantic and Emory University does find that divorce rates climb measurably with age gap: a five-year gap raises the divorce risk by 18% and a ten-year gap raises it by 39%, controlling for other factors. The age gap calculator shows where your specific gap sits in the population distribution and the associated divorce-rate context.

Among adults who have ever been in a serious relationship, the median first long-term relationship lasts roughly 2 to 4 years before ending or transitioning to marriage, according to the Stanford How Couples Meet and Stay Together study and Pew Research data. Marriages that survive the first 5 years have a much higher chance of reaching 25, with the divorce rate front-loaded in years 4 to 8. The average duration of a US marriage that ends in divorce is roughly 8 years. Long-term relationships outside marriage are increasingly common: the share of adults aged 25 to 54 who are cohabiting but not married has tripled since 1980. Use the relationship longevity calculator for your specific cohort and the relationship timeline calculator to compare your milestones to averages.

Roughly 3 months in is the median, but the gender split is unexpected. Multiple studies, including research published in the Journal of Personality and Social Psychology, find that men typically say 'I love you' first and earlier than women, often within the first 6 to 14 weeks. Women report saying it at approximately 4 to 5 months on average. Match.com's Singles in America survey corroborates this gap. The reason is debated, but researchers connect it partly to evolutionary signalling and partly to the fact that men report falling in love faster but having fewer overall lifetime partners. Cultural variation is substantial: timelines stretch by 4 to 6 weeks in countries with longer dating customs. The ILY timeline calculator compares your specific timeline to the population distribution by gender and age.

The median age of first marriage in the US is now 30.5 for men and 28.6 for women, according to US Census 2023 data. That is up from 26.1 and 23.9 respectively in 1990, and from 22.8 and 20.3 in 1950. The shift correlates with later college completion, longer career-launch timelines, and rising cohabitation rates: most couples now live together before marrying. The UK shows a similar pattern, with ONS data putting the average at 32.0 for men and 30.0 for women. Educational attainment is one of the strongest predictors: adults with a degree marry roughly 2 to 3 years later than those without. Race, region, and income produce further variation. The relationship timeline calculator shows where your engagement and marriage timeline sit in the modern distribution rather than against the outdated benchmarks people often imagine.

Healthy couples argue roughly 1 to 3 times per week on average, according to Gottman Institute research and survey data from YouGov and Match.com. The frequency itself is a poor predictor of relationship health. What predicts long-term outcomes is the ratio of positive to negative interactions during arguments. John Gottman's longitudinal research found that stable, happy couples maintain a 5-to-1 ratio of positive-to-negative moments during conflict, while couples heading for divorce drop below 1-to-1. The four behaviours Gottman labels the 'Four Horsemen' (criticism, contempt, defensiveness, stonewalling) predict divorce with over 90% accuracy when present in early-marriage interaction studies. Couples who argue rarely (less than once a month) often score lower on intimacy measures than couples who argue more frequently but constructively. The argument frequency calculator places your weekly count in the population distribution and explains the Gottman context.

The median is 6 to 8 dates over a span of 6 to 10 weeks, according to data from Hinge, Match.com's Singles in America, and academic surveys of US dating norms. About 40% of couples have an explicit 'define the relationship' conversation before becoming exclusive, while the rest drift into exclusivity without naming it. The percentage who become exclusive on the first or second date is small (under 10%), and the percentage who maintain non-exclusive dating beyond 12 weeks is also small (under 15%) before either exclusivity or dissolution. App-based dating compresses the timeline: people who meet online become exclusive 1 to 2 weeks faster on average than those who meet through friends or work. The dates before exclusive calculator shows the population distribution by age and how you meet, and lifetime loves contextualises how many serious relationships people typically have.

Roughly 53% of new heterosexual couples now meet online, according to the Stanford How Couples Meet and Stay Together study published by Michael Rosenfeld. Online dating overtook 'through friends' as the most common origin story around 2013 and has continued to grow. Same-sex couples have used online dating at higher rates for longer: roughly 65% met online in the most recent waves. The share of couples meeting through religious institutions, school, work, and family has all declined. The corollary is that the size of your effective dating pool is larger than it has ever been but the matching mechanism has changed: algorithm-led discovery rather than community-led introduction. Use the dating pool calculator to estimate the number of single people who match your demographic and geographic criteria, and the age gap calculator to contextualise the partners you are matching with.