Dating is legal but you are not of an age to consent to sex at 16. However, even though it may be legal, it is still not a good idea. Your parents could also try getting a restraining order against him.

Can a 25 year old date a 16 year old in Canada?

You can be charged with a sexual offence for sexual activity with a minor under 16 years of age. There is nothing that prohibits someone in Canada from “dating” a minor, sixteen years of age and younger, so long as the date does not involve sexual activity.