'I miss you terribly, but I pretend not to miss you'

'I am dying to see you but I pretend not to miss you'

Tu me manques terriblement, mais je prétend le contraire. 

Je meurt de te voir, mais je prétend le contraire. 

You could also say for the second line: Je meurt de te voir, mais je prétend que tu ne me manques pas. 

But i feel like that version is heavy and doesn't flow as well as the original in english. 

Sergey, 

We all learn languages differently. While I try to practice speaking Russian as much as I can, and listen to a lot of Russian music and watch Russian series, I still need to understand grammar. This is the first slavic language that I am learning and I like to give as much importance to grammar as to anything else. I like to understand the way a language is constructed in order to be able to apply the rules easily, without even thinking about them later. The case system is very new to me and I think it's really interesting how it works! :D

Спасибо за ответы ! :D 

It actually helped. I know not everything has a reason and should be used like we say it has to be even though it's always nice to understand why the rule works that way. It's not always necessary but when it's possible to know it helps use it better. 

Began, would be in the past. Simple past. While in this contest, the action just got completed, right now. So it has begun ! 

I don't know if this is clear but I hope it helps. And i am sorry for the double posts. I do not know how to edit my previous one. :)

Because here, we are using the present perfect: 

I have begun

You have begun 

He/She/It has begun

We have begun

You have begun

They have begun 

It is used to describe a complete action, I believe. 

I feel like I would agree with Ekaterina actually.

I think in English, French and Arabic, it just depends what it is about hahaha. And as you said, I get tired, especially in class because I always try to think in French while we're studying in English. And no, my professor is actually a native Russian speaker. The big difference in Russian from the other two languages is the cases actually which is what is somewhat hard to learn. I was thinking if I find the equivalent in French (like, situation examples in French in comparison to Russian cases use), it might help more. However, it is not as easy to find french sources to learn russian as opposed to english sources. 

Thank you for the answer guys. 

So it's just one exception I guess right? Actually, it would help me a lot if one of you gave me examples of Каждую ночь и Каждая ночь in sentences.