First off, don't bring up what you've done so far. There's just no point.

Instead just approach your manager and ask permission to work and study. It sounds like the situation has already changed in the company so he should agree. I wouldn't bring up the other employee UNLESS I was denied. If I was denied then I'd simply ask why they've agreed to let employee X do this but not me.

If you are still not allowed to do both then look for another job that is more in line with your personal situation. Regardless of how it plays out I simply wouldn't bring up what you've already been doing.

First off, don't bring up what you've done so far. There's just no point.

Instead just approach your manager and ask permission to work and study. It sounds like the situation has already changed in the company so he should agree. I wouldn't bring up the other employee UNLESS I was denied.

If I was denied then I'd simply ask why they've agreed to let employee X do this but not me. BTW, this type of question is already confrontational and will put the manager on the defensive. So try to make sure the manner in which you say it is as friendly or casual as possible while still looking for an answer. It's hard to describe but often how a question or statement is delivered helps set the other person in a frame of mind to help or block.

If you are still not allowed to do both then look for another job that is more in line with your personal situation. Regardless of how it plays out I simply wouldn't bring up what you've already been doing. Ever.