What to do when an ex has the upper hand? Please help

Anonymous
My ex boyfriend who broke up with me got into contact with me about 2 months ago.He said he missed me and was interested in talking to me again. He made a mistake etc. We started talking bit by bit. I became best friends with his sister while we were dating back then. When we broke up in January I've had my moments where I've been emotional about the breakup trying to get over it and said somethings things that were well mean. Because he was acting like an idiot after we broke up.

Well I told his sister some things that I wanted to keep between me and her. She asked me about it. I told her not to say anything to him. Well I had a conversation with him for about 2 hours pretty much told me she told him everything from me crying about it to other things I mentioned. He knows I haven't been in a serious relationship just been dating since him. etc When we ended the conversation he asked me when we were gonna hangout out again and that he was interested in talking again. I told him I'd call him once I got back from vaca. He said OK. Then said goodbye Hunni. The conversation went good) Thinking he really wants to work it out? Right?

I texted once on Christmas and he answered talked a little, asked me when I came back then haven't heard from him since. I texted him today got short answers and then he ignored my last text. He's not making effort anymore like before.

My other friend thinks because he knows all that info and he knows how I feel he's got the upper hand and he's messing with my feelings because he can.

How do I get him to realize he doesn't have the upper hand? I know the normal ignore him. Move on, but it's just so hard since he's opened up the old wound. I was to the point where I was over him until he messaged me and dumb me Answered! I want to ask him because their's is all these questions running in my mind. What to dooo :(

What to do when an ex has the upper hand? Please help
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