<human>: I was with my ex fiance for 6 years, were engaged for 2. Just before I was starting to plan our wedding he got a shocking case of cold feet and packed up and left. It was completely unexpected and extremely heart breaking. It lead to heavy drinking and really bad depression. I finally put myself out there and found my actual soul mate (or i think he is anyways). We hit it off straight away and have been going out for a while now, also living together. The problem is that because I was pretty much abandoned, i have this fear that my new partner will do the same. It has made me insecure and paranoid that he will leave for no reason also.

I know they are 2 different people and love me in different ways but how do I overcome this fear before it becomes a problem (has not been a problem yet). Note: I believe fiance got cold feet because of his own issue. Basically had an almost perfect relationship

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Ex fiance left from cold feet, now I have a fear I will be abandoned by my new SO even though there is no signs of it.