Long story short, i was dumped three months ago. I was with my ex girlfriend for 2 years. When we broke up, i went no contact right away. She texted me about a month and a half after the breakup. We talked again about a week later but she went cold so i gave her space. She texted me again about a month later simply saying "hi" and i responded "hey, what's up" about an hour later. She hasn't responded since and it's been a week. I want her back but i'm very confused. Why would she initiate contact and then not respond when i do?