FANTASTIC FOUR (1961) #129

The Human Torch quits the FF! The Thing embattled! Plus, the return of the Frightful Four- starring a nefarious new recruit. The torch decides to leave the FF to live with Crystal and the Inhumans. Reed and Sue have a serious argument about him leaving, and even Ben thinks about quitting to live with Alicia. However, this is forgotten when Ben gets attacked by the Frightful Four, including the powerful Thundra.