The phrase "affect the relationship between" is correct and usable in written English.
You can use it when discussing how one factor influences or changes the dynamics of a relationship involving two or more parties.
Example: "The recent changes in policy may affect the relationship between the management and the employees."
Alternatives: "influence the connection between" or "impact the bond between".
The event and its consequences affect the relationship between her poems and their context in even more profound ways.
She is also sympathetic to limits that affect the relationship between state and federal courts.
In a country like Nigeria, where the government has ample access to oil revenues, foreign assistance is unlikely to affect the relationship between citizens and the government.
"If we have to deal with a clown like Donald Trump it will seriously affect the relationship between the EU and US," said one European source.
The marketing function takes different forms in different companies at different product life-cycle stages all of which can deeply affect the relationship between Sales and Marketing.
Age was shown to affect the relationship between in-vehicle distraction and the risk of car crash injury.
We will also examine confounding, where extraneous variables affect the relationship between two or more other variables, leading to spurious associations.
Monnot was curious to see how living in different cities in China might affect the relationship between valuing income and well-being.
His article demonstrates that it is the president of the United States who personally makes all the operative decisions that affect the relationship between our countries.
9.12pm BST: For what it's worth, the White House says the arrests of 11 people in an alleged Russian spy ring won't affect the relationship between the US and Russia.
This argument was accepted by the information commissioner who believed that disclosure of the state aid discussions with the EC "would adversely affect the relationship between the (UK) government and the commission's ability to work effectively together".
