<human>: We had been the best of friends for 3 years before we started dating. For about six months it was just us, talking and hanging out all the time. 

Then they were problems involving another guy who was her ex. We had some huge fights about her kissing him on multiple occasions.

Recently though, its been better regarding the ex. She doesn't talk to him anymore.
 
But then recently, she has started complaining about wanting more space. She feels confined. I don't know why and how? We are already talking a lot less than before and I try to give her all the space. And I try not to pick up fights about her not giving me enough time and stuff like that. 

Still yesterday we just talked for 10 minutes in the whole day, and I know it might sound immature but I have gotten used to talking endlessly. And last night when I called and tried to text, she said she didn't want to talk as she wasn't in the mood and we ended up having a fight about it. 

Today morning, she said she wanted to breakup because I was becoming overbearing and that she felt confined and wanted her freedom.

Though we didn't breakup but, I don't what to make of this, is she over me? Has she had enough? Is there another guy in her life? Or am I just over thinking stuff and there was something troubling her that made her not want to talk to me? 
Should I be more understanding and give her more space?

Give me the gist of the text in a nutshell
<bot>: Gf doesn't feel the need to talk. Feels confined and wanted to breakup, I don't know what to make of it.