Sounds like you realize you need to break up? If so, you have to stop acting like her boyfriend.

If you are just taking time to think, do what enables you to get a clear mind. She already knows what is going on at this point

Yesterday I went to my girlfriend and we had a talk, things weren't going that well lately and we both had a bunch of things that were stressful. She threw me the, i'm not that happy anymore, i miss the fun and playfulness, wanted to go out again etc..
So you framed what she was saying as some sort of a manipulative tactic of sorts, rather than her being genuine and truthful.

while i had enough of her instability and unpredictable behaviour, the week before she gave me a lecture of how much she loves me, how glad she is etc...
Is her behavior really "instable and unpredictable", or possibly you not being responsive toward her needs? And/or her feeling a lack of safety in conveying what's truly going on for her?

The whole conversation i kept it cool and told her it's a choice she has to make and that if she doesn't feel sure, she should just make an end to it and enjoy what she does most.
Do you consider giving ultimatums, even thinly veiled ones "keeping it cool"?

I made the decision to break contact for a while and she said ''okay, if that's what you want''. Before i went, i decided to buy her a good luck card for her exams with a nice text. When i left the house, i left the note there.
I put a text on it where she had to mark a question, saying something like '' Do you love me more? " - ''[] No - Not possible & [] No, but i'm a panda.
So, rather than being responsive to her wanting more excitement in the relationship, you instead personalized things and made the decision for her to end things...but then you go send her a sweet gesture. Who's behavior is confusing here?!?


Eventually that same night she texts me saying.

'' I know we agreed on not having contact anymore, but i got to say that your gift was really sweat. The answers on the card is not possible for me to answer, because the answer isn't there. despite anything that happends, you should know that i still love you most ''.

I didn't answer it, i couldn't. I'm pretty sure it's an attempt of her drawing out my feelings for her, or to see how i feel. But for me, the problems are there, and i dont want to get into this emotional conversation where she gets her hormons working for her and thinking she does love me, and once the rush is over, realises that we still have problems (Typically her).

Was it wrong for me not to answer? Or could i have gone like ''Appreciate it, thanks - good luck with your exams''.
For how long should i break the contact?

I think in your quest to exert your 'power' or out of some displaced insecurity you're making the relationship a causality. If you don't want to be with this woman that's one thing, if you want to have a healthy relationship with her, you're going about it entirely in the wrong way. Passive aggressive techniques only create further insecurity in any relationship.