谈恋爱，双方年龄差多少合适？这个理论认为……
What’s the best age gap in a relationship?

An often-asserted rule of thumb to determine whether an age difference is socially acceptable holds that a person should never date someone whose age is less than half their own plus seven years.一种流传很广的理论认为，社会普遍能接受的年龄差是年纪小的一方不小于年纪大的一方年龄的一半加上7。

While female users look for men roughly the same age as them (or perhaps a year or two older) men prefer women in their early twenties, regardless of their own age.女性通常会选择和自己年龄大致相近或者大一两岁的对象，而男性无论多少岁都会更倾向于选择20出头的对象。

Across Western countries, about 8 percent of all married heterosexual couples can be classified as having a large age gap (ten years or more). These generally involve older men partnered with younger women. About 1 percent of age-gap couples involve an older woman partnered with a younger man.

The ability of both members of a couple to sing a favourite childhood television theme tune could bond them together, at the risk of irritating those nearby.情侣们冒着打扰身边人的风险，哼唱同一首孩提时期最喜欢的电视剧主题曲，或许能让二人更亲近。

These couples seem to report greater trust and lower jealousy than similar-age couples. Over three-quarters of couples where younger women are partnered with older men report satisfying romantic relationships.年龄差较大的情侣会更信任彼此，嫉妒也会少得多。有超过四分之三的年轻女性与年长男性结合的情侣们对亲密关系很满意。

Another factor at play may have to do with the stage of life each partner is experiencing. For instance, a ten-year gap between a 20-year-old and a 30-year-old may bring up different challenges and issues than for a ten-year gap where one partner is 53 and the other is 63.另外一个影响关系走向的因素是两个人所处的人生阶段。例如，同样是10岁的年龄差，20岁和30岁之间人生阶段的差异自然要比53岁和63岁的大很多。

We all know that the best things in life don't come without putting in a little work, and love is no exception. 爱情和生活中其他美好的事情一样，不付出努力是不会来到我们身边的。