Embrel could it be related to depression and personality disorders???

My husband has been on Embrel for about 10 years. He was recently diagnosed with severe depression and lately shows signs of APD Antisocial personality disorder. In that he continually engages in risky sexual behavior with the same woman. We have been to marriage counseling and talked it out ad nauseam. Three times he has started up this long distance affair with is mostly over the phone but there have been physical meetings that he has not even tried to hide-in fact flaunted in front of my face.

I am beginning to think that my formerly sweet husband is being affected by the Embrel that he has been taking. Has anyone else out there witnessed such events or weird behavior from loved ones or friends on Embrel?