Its not illegal to date, but you cannot legally consent to any sexual contact until you are 16.

Can a 14 year old date a 17 year old in Canada?

So, for example, a 14 year old can have sex with someone up to 18 years old (as long as the age gap is less than 5 years). While 16 and 17 year olds can consent to sex, they can only do so when their partner is not relying on their trust, authority or dependency to obtain that consent.