The first form is correct, but only if the "with my friends" is in parenthesis:


  I (with my friends) go to the cinema every weekend. 


However, this would only be used to stress the fact that you go to the cinema with your friends (for example if this had previously been put into doubt) and I really can only think of a couple of very specific contexts where it would be preferable to use this construction over an alternative. 

To more generally state that you and your friends go to the cinema (particularly if your going to the cinema is more important than who you go with, or if your going to the cinema and your going there with friends are equally important) then the second form you proposed would be the correct one to use.

Please note I speak British English, and while I am fairly confident that what I've said also applies to other dialects, I am not certain of it. 

I with my friends vs my friends and I
I'm wondering which option is best for an iPhone app using a hamburger menu (placed at the top left):


The menu is persistent on every single page even when the user goes
to a sub-level.
When the user goes to a sub-level, the hamburger menu is replaced by a back button or a button whose label is the name of last page visited.
Both. The menu is persistent on every page and a back button appears when needed.


Thanks for your help :)
