Wanting ex gf back help guys and girls?

ok, there is this exio want back, more then anything. she told me i was up her a## all the time. then two weeks befor xm i cought her cheating. then of course she was done. well she always goes for the guys that are bad to her and im not that kind of guy. i love her and her two kids so much. i had already had xm preasents for them when i cought her she wanted me there xm eve and day but would not stay the night with me. iv asked her to take things slow and she tells me no. iv done a lot for her only bec i love her not that i feel she ows me. we can still talk and she still asks me to do stuff. i feel if i say no im messing up but doing it is not helping how do i get her back without beging or being pushey. what can i do or say she knows how i feel. we talk almost everyday. when i say im not going to call then she calls me. i want to loose a litte of my feeling so i dont push to much but i want a chance. do i keep calling? awnser her calls? say what? dont want be clingy 2 her