sbarro90095 said:
You should start by visiting the CIC webpage on family sponsorship and familiarizing yourself with this topic:
http://www.cic.gc.ca/english/immigrate/sponsor/index.asp
Bad news: Just by marrying, it does not mean that he can stay here. He must leave on or prior to the expiration date. He can't stay here, unless he has a pending restoration application for his work permit. You should've married and applied for him while he was IN STATUS.
while it's true just marrying your boyfriend doesn't give him the right to live in canada, he certainly does NOT have to leave. If his work permit expires in August, he can apply for an extension to stay in canada as a VISITOR. During this time he would not be allowed to work or study in a program that is more than 6 mo. long. He can apply to extend his stay online, and it is $100. It's recommended this be done at leat 30 days prior to the current visa expiring.
Once his application to extend is in, he will have implied status until a decision is made. Generally, people ask for 12 month extensions. Extensions are rarely denied for visitors who have applied for PR or suggest in their extension application they intend to apply for PR in the near future. There are many people who mention they plan to get married and apply for pr and are successful at getting extensions and staying in canada for the entire process.
Bottom line, he doesn't have to leave, he just can't work here legally. He needs to extend his stay as a visitor, get married and apply for PR.