Me and my ex split 3 months ago because I was lazy LOL! I sorted myself out. Now we still speak, but she came to me for help the other day, then kissed me but pulled away and cried. I love her so much but don't want to get used. What do I do?

If you love her so much, and she obviously still has feelings for you -- take your connection nice and slow. (The crying is her own confusion/misgivings about not wanting to get involved with the person who she feels let her down before.. -- who she still has feelings for; - that's you!)
You say you sorted yourself out...

If so, give her time and SHOW her how you're different as a friend. Talk is cheap.

You ask her if she will give you another chance and go from there. If she is willing, great. If not back off. Nothing ventured nothing gained, or lost, you are already dumped.

And tell her you know the issue, but only if you want to change, if you are lazy and want to be lazy and will stay lazy, forget it, since she already was clear that is not what she wants.