A 38-year-old man is referred for psychiatric evaluation by his primary care provider after his wife expressed concerns about his increasingly controlling behavior. The patient reports spending 3-4 hours daily checking his wife's phone, email, and social media accounts for evidence of infidelity. He follows her car using a GPS tracker and frequently drives by her workplace. He acknowledges that he has found no evidence of infidelity in 2 years of surveillance but states he 'cannot stop looking because there might be something.' He describes intrusive, recurrent thoughts about his wife being unfaithful that cause him significant anxiety, and the checking behaviors temporarily reduce his distress. He recognizes his behavior is 'probably excessive' and that his wife has been faithful, but he feels compelled to continue checking. He reports no history of actual infidelity by his wife, no substance use, and no prior psychotic symptoms. His own fidelity has been consistent. The thoughts are distressing and ego-dystonic. There is no evidence of delusional conviction, and he is able to consider the possibility that his concerns are unfounded. Which of the following best characterizes this patient's presentation?