1. Being too picky
"Must have brown-skin, beautiful eyes, make more money than me, knowing at least 3 languages..."
2. Being too independent
Do you feel like you don't need anyone?
3. Not making enough effort
No one gives you the number of the person you will fall in love with.
4. Not knowing what you are looking for
You have to know what you want.
5. Being impatient
Let nature take its course.
6. The person you love may not love you back
You love someone once in a blue moon but the person doesn't love you back.