Quote:
We had been together for 4 months and in that time I was constantly questioning her
You let your emotions completely control you. You were all over the place, and the girl just couldn't take anymore of it.
Four months is nothing! Those days should have been NOTHING but fun, not questions.
When you control your emotions, and are the fun, rock solid, chill guy, women do not request time away from you. They want to be in your presence often.
She stated she needs time, so all you can do is give her time. Don't blow up her phone. Go on a few dates, and learn how to be an emotionally-centered man so this doesn't happen to you again. By then, maybe she'll hit you back, and you can handle her better.
Quote:
I pleaded with her saying I would change and she said I was being selfish because I wouldn't give her time.
Let's be perfectly clear what that quote means. It means that a woman has lost attraction for you. A chronic behavior pattern or a series of events have whittled the attraction that was there to lower levels. It could be neediness, questioning her all the time, constantly blowing up her phone (IE, "checking in").
Your only real hope of rebuilding that attraction, is through your silence. You've tried begging, and she shamed you. I talk about this a lot here. Never fear silence. Embrace it, as a strong, centered man would. Often, it is the spaces between the notes that makes the best music, and the same for courtship.