Is AUTHOR wrong in the post ? POST : AITA for not wanting to be with my ex?

Back story time, me and my ex were together for about 8 months but we broke up due to her cheating a couple of times and me finally realizing she's not going to change, but now that's in the past and I don't care that she cheated anymore I'm over it. Now me and her still talk and we're friends for the most part and I enjoy talking to with her and spending time with her still and sometimes we fall back into our old ways and do stuff and recently she asked for us to get back together, and she called me an asshole for saying that I didn't want to. Do to the fact that I just don't trust her in a relationship anymore and I don't wanna go through the whole cheating stuff again. I didn't think that I led her on I made it pretty clear that us hanging out (when we started to hang out again) ddin't mean I wanted to get back together and she accused me of leading her on. 

So AITA for 1 not wanting to get back together

and              2 leading her on(if it seems like I did?)