You can send him an invitation letter and he can try to apply for a visa. It’s pretty unlikely he’ll get approved, but if he can prove he will return to Germany after the trip, he may be approved.

If he doesn’t get a visa, you’ll have to go there to marry him.

If you are not a Canadian citizen, some jurisdictions will require you to prove your single status in your home country. Contact the municipal office where you are going to marry to find out whether or not you need to do so.

Provided the marriage was legal in the country you married in (and it must have been for the sponsorship to have gone through), you do not need to get remarried in Canada. You can have a religious ceremony, of course.

If you want to come to Canada, you want to apply for a temporary resident visa, which is Canada’s term fora visitor or tourist visa.

You can marry in Bangladesh if you cannot get a visitor visa to Canada.

She can sponsor you once you are married.

If she can get a visa to Canada and you can enter Canada you can legally marry in Canada. Whether or not you can bring her to the US depends upon whether or not she was given a ban, or just left voluntarily.

Let’s try to answer your questions:

1. It’s better if he can come here and you marry him, only because then the marriage certificate will be in English. If you marry in China, you’ll have to get the marriage certificate translated. (Also, China might have a law against two foreigners marrying or, at the very least, a residence requirement. You should look into that if you intend to marry in China.)
2. He will need to prove that he intends to leave Canada after his trip, so he will have to show he intends to return to China or Pakistan. Then he will have to prove he can afford the trip.

Each province has slightly different rules regarding this. In most cases, you will need written permission from a custodial parent, provided you are old enough. (For example, in Ontario, you must be at least 16 years of age to get a marriage license regardless of parental consent.)

• Complete a marriage license application.
• Go to your local municipal office which handles marriages.
• Pay the fee.
• Get married.
• Receive the marriage certificate.

Your boyfriend will need his passport and you will need a government photo ID. Your boyfriend may be required to prove his single status.

Yes, the United States recognizes legal Canadian marriages unless they somehow contravene the laws of a particular state.

It won’t impact your marriage. However, it may impact the sponsorship application depending upon the type of crime(s).