<human>: Can you condense the text into three sentences or less?

I've been seeing this great girl for the past 5 months. Everything has been amazing, way better than I thought a relationship could be. We both feel like we reciprocate and can't seem to get enough of each other. I see great things for our future.

However.

My past big relationship of 4 years ended with my ex cheating on me. We don't have to get into the details, but basically I think I ignored red flags I shouldn't have for the sake of denial and wanting it to work out. It hit me like a ton of bricks and I spent 3 years just working on myself. I thought I was completely secure in myself and had no issues being alone for as long as it took.

This new girl is head of heels for me and I her, she brags about me to her friends and family and has given me no reason to think she would be unfaithful. However, when we're not together, I can't help but allow crazy thoughts of infidelity creep into my mind. It causes me to push a little too much and I don't want to push her away. If she doesn't text me back as quickly as I'd like especially it gets me a little crazy. 

My logical mind knows this is crazy but my emotions take over. I haven't done anything yet to really cause an issue but inside it *sometimes* eats at me. I want to communicate with her everything but at the same time I don't want to come off as needy/insecure. I'm at a bit of a quandary here. Does anyone have any advice? When were together everything is fine, I even realize how crazy my thoughts can be and say to myself, next time you're alone, don't let the bad thoughts take over. But they do. I want to respect her space and mine, and I don't want to NEED her as much as it seems I do. I need help.

I feel like I'm at the point where I haven't done any damage but I also feel like if I don't fix this problem soon the deeper we get the worse the fears and insecurities will get.
<bot>: I was cheated on in my last relationship and want to not let the insecurity and bad feelings ruin the potential of this new, great, better relationship.