Possible Clues:

• Hit the roof with partner after conclusions taken from lab to FBI
• Become so excited as to lose control
• Bachelor, old one, and girlfriend maybe get too passionate
• Become uncontrollably angry
• Blow up
• Lose one's temper
• Swelling maiden perhaps gets to lose temper?
• Seethe uncontrollably as biopic regularly omitted romantic interest
• Evil boor (anag.)
• Hygiene problem gets one sweetheart to become very indignant