Define Sex, can you be in a romantic and intimate relationship without being sexually active

Define Sex, can you be in a romantic and intimate relationship without being sexually active (why or why not)provide complete sentences to explain your reasoning,can you comfortably share your sexual history with your partner?,what information do you feel you should share,or disclose,and what information should you withhold,Do you think it is important not to discuss protection Who’s job is it to provide contraception? Why?