The present article deals with a number of themes that pertain to culture and language relation in bilingual reality, most notably how bilingualism is defined and classified in the literature, and how bicultural bilinguals’ languages and cultures are interconnected. In the subsequent research part, the reported data formed the basis for conclusions supported by two-year observation and interviews of 4 Spanish-English bilinguals. The case studies allowed to gather information regarding their linguistic and cultural behaviour and how they identify themselves both linguistically and culturally. Each case study is discussed and conclusions on parallel points along with dissimilarities between accounts of the linguistic and cultural reality experienced in both languages are outlined.