Smelling your way into love

No matter what their gender, people are drawn to a person depending on how they smell and how much they are innately drawn to that smell.

Daydreaming in love 

All of those daydreaming thoughts of your love, the reminders of love, influence more abstract and creative thinking. 

Heartbeat

Couples who are in love their heartbeat rates as they gaze into each other’s eyes, hence the giddiness probably. 

The immune system connection

People are intrinsically interesting, and so are the ways we love. Another one of the people facts about love is that we actually find people with different immune systems than ours more attractive to us.

Broken heart

Heartbreak is not just a romantic metaphor but a real phenomenon that is real and intense emotional stress that weakens your heart.