METRO.CO.UK - Dec 9 - eHarmony research reveals when couples go through each stage of dating. The dating site surveyed ~1k people from Australia to find out the stages each major relationship goes through and when they happen – from the first time couples have sex to how long it takes to move on after a breakup. The research found that one in four of us share a kiss on the first date. 9% have sex with someone on the same day or within a week of meeting them. It usually takes people three months of dating before they deactivate their online dating profiles and actually commit to the relationship they're in. After four months, 29% of people will share the first photo of themselves and their partner online. The 'I love you' stage tends to happen shortly after. On average couples take three months to exchange 'I love you's. On average it takes 45% of people a year to get engaged, another year before they actually get married, and a year after that to have a child.