Let your heart rule your head phrase
To do domething based on your emotions rather than for rational reasons
He's really not a good guy to marry, so don't let your heart rule your head.
If you don't know who you truly love, let your heart rule your head.
I can't believe that Tom beat his classmate. He's always the one who let his heart rule his head.
The verb "let" should be conjugated according its tense.
Daughter: So I really want all my friends to have a great time. I was thinking it would be a good idea to have some candy out on the tables for people to snack on.
Mother: Well, if you want them to really enjoy themselves, candy is dandy but liquor is quicker.