The series deals with issues and ideals of virginity, and sexual intercourse in that Chi is effectively incapable of sexual intercourse (in the manga and in the series), as attempting to do so would “reset” her, so she must therefore only entrust her body to someone who cares for her well-being as opposed to a purely sexual relationship.
Freya explicitly tells this to Hideki in the final scene of the manga, that to have Chi, pointing between her legs, means that Chi would lose all her memories. However, earlier in the …

The Chobits series deals with issues and ideals of virginity, and sexual intercourse in that Chi is effectively incapable of sexual intercourse (in the manga and in the series), as attempting to do so would “reset” her, so she must therefore only entrust her body to someone who cares for her well-being as opposed to a purely sexual relationship.