Those stars and colours you see when you rub your eyes are called phosphenes...

Have you ever closed your eyes, rubbed them and seen stars? Or at least little pops of light? It turns out that those pops of light have a name: phosphenes.
They are a phenomenon characterized by seeing light without light actually entering the eye. This rubbing mechanically stimulates the cells of the retina causing this effect. Sometimes, these phosphenes can still be seen for moments after you open your eyes.
Meditators have also reported experiencing phosphenes, and they have actually been known since antiquity. Ancient Greeks described them. Other reasons people ‘see stars’ are because of sneezing, coughing, blowing your nose or receiving a blow to the head.

When you Fall In Love, You Lose Two Close Friends !!!

Researchers at Oxford University conducted a survey asking people to describe their close circle of friends, and compared the difference between people who were in romantic relationships.
On average, when asked to list the members of their core group of friends, people name 5 friends. People in romantic relationships could only name an average of 4 close relationships. That's an average net loss of 1 person in your friend circle as a result of adding a new person into your life. Typically this means that you lose 2 friends from your group of 5 and then add your new lover to get to a total of 4.
This core group consists of people that you see at least once a week. You may of course have many more peripheral friends. Adding a new lover into the mix will force you to budget your time differently, forcing you to lose touch with an average of 2 people in your core group.