<human>: Can you provide a brief overview of the text?

I'm an 19 y/o guy, and I'm pretty much fighting demons right now. To make it short: my girlfriend has 18 y/o and she had some pretty hard exams lately (3 weeks ago) but I couldn't be beside her to keep her morale up. She did pass all her exams but not with the results she wanted and then her entry at the university wasn't easy either. 

So without me to cheer her up she begun to smoke without telling me, she just lied to me, sneaked out to smoke and so on, as we spoke on skype. At first I made some suspicion and it killed me mentally I couldn't believe that she smokes. After I came back, 1 week ago, my suspicions were true, and our couple took a big hit.

 I'm really mad at her that she lied to me.
 Now to make it clear she tries to stop smoking  (she smokes "halves" of cigarettes and so on) but our couple is not the same ... She's cold-ish and she just told me that she's angry at me. And to explain it better she never let me go with her on the balcony when she smokes although that's killing me in the inside.. 

I don't know what to do, what it's my next move ? 

The fact that she smokes bothers me, but I can get on with it, but the fact that she's always going alone on the balcony .. I don't know it's making me crazy. 

I need help!
<bot>: She's smoking, I don't like it, but it's creating some preassure in our couple and I don't know what I should do! Btw she's trying to stop !