Absence makes the heart grow fonder
Definition 1 of 1
Pro Tip 1/3Emotional Weight
The phrase often implies a deep emotional longing or nostalgia for a loved one. 
Since moving to college, I find that absence makes the heart grow fonder; I miss my parents more each day.
Pro Tip 2/3Not Literal
It's a metaphorical expression, not to be understood literally, emphasizing emotional bonds over physical presence. 
After a year abroad, their reunion proved that absence makes the heart grow fonder.
Pro Tip 3/3Positive Connotation
This phrase generally carries a positive tone about the strength of relationships. 
Their friendship didn't fade with distance; instead, absence made the heart grow fonder.