<human>: i've had a few guys in my life that have been really detrimental to my well-being, often playing with my emotions and vulnerable states and using me because they know i would easily give in since i hate making people upset with me. i've had a few friends that would put me down and make me feel horrible about myself and during high school people would make comments about me even if they weren't true at all.

 in the past 5 years i have pushed away almost every person who had tried to be kind to me because i felt as though they were going to just use me like most people tended to. i only had two friends in school and in grade 12 i started to date this boy who promised me the world and treated me a lot better than the other guys i had been with or had been talking to.

i recently moved across the country and generally feel alone now that i'm no longer always with my two best friends. a boy that i was dating ended up breaking up with me because he wanted to be able to hook up with people in college - resulting in me feeling like total shit and like i wasn't good enough for him whatsoever. i ended up getting tinder so i could try and make a few friends around here. i ended up talking to this really amazing guy who i have a surprising amount of things in common with.

i'm really nervous to meet him and i'm scared that i'll start to push him away because of how i've been treated by people who try to show the slightest amount of interest in me. i have really bad anxiety and it's extremely prominent in relationships and friendships, no matter who the person is i always have this thought that they may just be using me or treating me nicely until they get tired of me and throw me to the side.

for people who have experience with pushing people away, how did it affect you and how did you get over it (if you have)?

Condense the text into a few key points
<bot>: i've had a string of toxic people in my life and it's resulted in me pushing away people when they show genuine care for me. how do i overcome doing that?