** spoiler alert ** There are some awkward parts in the story.
If the ex-fiance came and told her they didn't broke it off in the end, so she breaks up with him because he lied to her by not telling her the ex even wanting to get back. In theory she breaks up cuz he lied, but wouldn't it be more reasonable if it's also because she's afraid to get hurt?
If that's the case, it's weird that they just got back together, said their feeling and he decided for the both of them that their are going to get married.
Really, if the main character was that afraid of relationship the part with her fighting against it and trying to have a long relationship should be a little longer so that'll be able to go "ahhh so that's why she did that".

I probably confused the hell out of people. The point is that the story doesn't flow right, so it feels awkward. But it had a good start, the problem is only in the end I guess...