<human>: Can you give me a shortened version of the text?

Me (F 26) and my boyfriend (M 31), have been together for over a year, over a year and a half actually.

We broke up for about 2 months because I moved to another city across country, and we were both hesitant to try long distance, but here we are trying it.

However, when he met me he had been dating a girl for 3 years (same age as me), also long distance. They broke up about a month after we met, and we got together about a month afterwards. 

Distance played a big part in their break up, and he said mainly he fell out of love with her, but the fact that they only broke up because of distance bothers me (maybe it means they still have feelings for each other?).

Basically, I still feel insecure about her , and I am scared that if she moved closer to my boyfriend, they would get back together, because their relationship was so serious (marriage plans, etc). And, well basically I think about his ex everyday, and it makes me feel very down on myself, because what they had seems way more special.

So reddit, what should i do? I have been very confused, and I don't know if we should just break up since that way I will stop feeling insecure about it.
<bot>: I am (F 26) insecure  about my boyfriends ( 31 F) ex girlfriend. What should I do?