Wear your heart on your sleeve
Definition 1 of 1
Pro Tip 1/3Emotional Openness
Using this phrase implies you're comfortable sharing feelings, some view it as a sign of honesty. 
In relationships, it's often better to wear your heart on your sleeve.
Pro Tip 2/3Vulnerability Risk
It suggests you might be vulnerable because others see how you feel. It's not always safe. 
He doesn't wear his heart on his sleeve at work; it's too competitive there.
Pro Tip 3/3Cultural Perception
In some cultures, showing emotions is seen as weakness. Understand the cultural context before using. 
I appreciate your openness, but not everyone is comfortable when you wear your heart on your sleeve here.