You can apply for a visa but it’s very likely that the application will be rejected because they will suspect you are going to overstay.

You’d be much better off getting sponsored by your boyfriend. But you can still apply for a visa to see if they’ll approve it.

You should be able to re-enter however you can expect questions about your intentions if you haven’t gotten an extension. (This assumes you have a valid eTA/visa to get to Canada in the first place.)

If you still have a valid visitor visa, you can travel to Canada and enter Canada as a visitor. You should not attempt to enter as a student if that study permit contains incorrect information and you did not apply to correct it.

There is no special visa for this. You need to apply for a visitor visa.

If you want to work in Canada, you need to apply for a work permit, which normally requires a Labour Market Impact Assessment (LMIA) and a job offer from a Canadian employer.

Visas are decided on a case by case basis, so you’ll have to submit an application to find out. Please note that if you planning to apply for a program longer than 6 weeks, you need a study permit. However, you cannot apply for a study permit to attend an ESL program.

We cannot tell you your chances. Nobody can. Since you have been admitted, you should apply for a study permit.

You can marry your girlfriend if you’re on a visitor visa and she is on a study permit.

Once married you can apply for a spousal open work permit for the duration of her study permit.

You can if you have a valid visitor visa as well. The study permit should get you in the country but it won’t let you fly here. You need the visitor visa to fly here.

You may extend your work permit if it’s still valid. If it’s expired, you will have to renew it. You will need a job offer and LMIA just like you did the first time.

Not necessarily. It depends upon which country where you are from. They will request one from you if you need it.