So I have a friend who I think is becoming my fp but I'm terribly afraid of that because last time I had a really bad time when my fp walked away from me. I'm afraid because I become unbearable. I question everything they do, I ask too much why the aren't texting me back, or of they are angry at me, I start to ask them if they still are fine with me. I start the cricle of self fulfilling prophecy where you are trying to not be abandoned but end up messing everything up because I become awful even if at first the were not at all felling overwhelmed with me but now they are. 

I just want some help or advice as to how to go about it before I start ruining my friendship. Should I tell my new fp about what's going on? Like to prevent, warn them, or let them help me see that I'm been too much at one point or stuff like that? I know that it might be better to just bottle it up and try not to be mad at them but I don't want to feel so awful and feel like they are ignoring me etc.

Just need some advice or reassurance :(