library(stringr)

    x <- "There is a horror movie running in the iNox theater. : If row names are supplied of length one and the data 
    frame has a single row, the row.names is taken to specify the row names and not a column (by name or number). 
    If row names are supplied of length one and the data frame has a single row, the row.names is taken to specify 
    the row names and not a column (by name or number) Can we go : Please"


    y <- "There is a horror movie running in the iNox theater. If row names are supplied of length one and the data 
    frame has a single row, the row.names is taken. To specify the row names and not a column. By name or number. : 
    If row names are supplied of length one and the data frame has a single row, the row.names is taken to specify 
    the row names and not a column (by name or number) Can we go : Please"

    z <- "There is a horror movie running in the iNox theater. If row names are supplied of length one and the data frame has a single row, the row.names is taken to specify the row names and not a column (by name or number). 
    If row names are supplied of length one. : And the data frame has a single row, the row.names is taken to specify 
    the row names and not a column (by name or number) Can we go : Please"             


df <- data.frame(Text = c(x, y, z), row.names = NULL, stringsAsFactors = F)

resDF <- data.frame("Col1" = character(), "Col2" = character(), stringsAsFactors=FALSE)

   processData <- function(a) {
        patt <- "^(?s)(?!(?:(?:[^:]*?\\.){3,}))(.*?):(.*)$"    
        if(grepl(patt,a,perl=TRUE))
        {
            result<-str_match(a,patt)    
            col1<-result[2]
            col2<-result[3]
        }
        else
        {
            col1<-"NA"
            col2<-a
        }
       return(c(col1,col2))
        
    }
    


for (i in 1:nrow(df)){
tmp <- df[i, ]
resDF[nrow(resDF) + 1, ] <- processData(tmp)
}    


print(resDF)