10 reasons Why Marshall and Lily is the perfect couple

1.  Love at first sight 

2. Their personality match 

3. Been together for a long time and they are still so in love 

4. They both give and take 

5. They enjoy doing activities together 

6. They are honest and open to each other

7. They only have sex with each other

8. Never ever have the thoughts of cheating

9. High level of commitment 

10. Acceptance of weakness