How do we know when we’ve fallen in love? (2016)

Meanwhile, people from collectivistic cultures like China may be more concerned about the wishes of family members, and are more likely to see love as a deep form of friendship rather than a mystical connection. But those who met later in their 20s, or in their 30s or 40s, unanimously said that recognizing their love for a new person took at least a few months. Other people who found romance a bit later in life said they knew they were in love when they wanted to make sacrifices for the other person—to risk sleep and sickness for them, perhaps (“I have had a cold for the past week because this happened,” as one respondent explained)—or to go through the potentially uncomfortable process of introducing their partners to parents and friends.

Source: qz.com