Hello, Welcome to Healthcare Magic. I had gone through your question and understand your concerns. Clonazepam affects chemicals in the brain so it can cause mental or emotional side effects. Also it can cause changes in behavior, nervousness, mood swings or irritability. Please note that your boyfriend should not drink alcohol while taking clonazepam because it can increase the effects of alcohol. If you can not handle with your boyfriend s behavior you should talk with him and make an appointment with his doctor so that he or she may change the treatment. Hope I have answered your question. If you have any further questions I will be happy to help.