Exam time

Question: If you are living with someone for nearly 7 months but they still refuse to actually call you their girlfriend, introduce you to their friends, family and still count themselves as single, can an indescretion on your part near the start of the 7 months be counted as cheating? Or merely tactless in the extreme? If said person who is refusing to be classed as 'boyfriend' gets upset about the indescretion in question is he counted as 'having his cake and eating it' due to denial of relationship in the first place? (For the purpose of answering the question, please assume that the denial of the relationship has been going on since the beginning and was in actuality a main factor behind the indescretion in question) Please attempt to keep answers from containing the phrase 'I told you so' if at all possible.