Do your relationships always end in heartbreak? You're not alone. Around 35 per cent of Australian marriages end in divorce - and that's just couples who manage to tie the knot. When you factor in dating couples and de facto relationships, the percentage of breakups is much, much higher.
The good news is that scientists have been studying what makes couples happy using actual science. This infographic from Happify breaks down their chief findings, from optimum positive/negative interaction ratios to the importance of communication.