Is she playing games?

Basically, I lied to her, told her I was seeing another girl because she broke up with me and I wanted to make her feel hurt like she did to me. We got back together about 6 months ago, I kept mentioning this girl but the truth is there is no other, I made it up to make her jealous... I told her the truth and she wanted space, but she said she's sure we'll still be together afterwards, that she doesn't want to leave me... Now yeah I messed up, but I can confidently say I've treated this girl like a princess, I've been through all her ****, her lies, her bad days, her off days, when she's made me feel like ****, I've always been there because I love her... I've never lied or mistreated this girl ever, not once, my goal is just to make her smile! She's admitted breaking up was the worst mistake she's ever made, she's explained in tears exactly how much she loves me... Now I made a mistake, all I want is to make it up and show her I'm sorry, whatever it takes! But I don't get what she's doing, does she wasn't space to make me suffer and feel how she did, is she considering breaking up, I just don't know where this is going? Any advice is appreciated, thanks