Answer:
engage in stimulating activities that they both enjoy.
Explanation:
His behavior would fall under the following category of abnormal behavior - interferes with ability to function.
Because his girlfriend cheated on him, he feels depressed and cannot continue with his usual day-to-day life until he "mourns" the loss of his significant other and gets over the betrayal and pain that they caused him. His functioning is impaired due to this trauma, but will come back to normal eventually.
Yeah I know it make a lot of sense <span />
