<human>: My boyfriend Sam and I have only been together for about six months. Prior to me he was in a three year relationship with his now ex-girlfriend, Emma.

The major issue that is coming between us is my insecurity about his relationship with his ex. They broke up about a year ago but recently she came back into his life wanting to be friends. I actually suspected she wanted something more and it turns out my instincts were right when I later found out that she admitted romantic feelings for him and wanted to get back together.

Because of this I am extremely threatened and uncomfortable about anything to do with her. It bothers me that there are still photos of them together on his Facebook page. He wants to take me paddleboarding but I don't want to go anymore after seeing a photo of her on a paddleboard (I assume that's something they did together). I don't like wearing a certain perfume anymore because I know she uses it too. I don't like calling him "Sammy" because I know she used to call him that. I can't do reverse cowgirl with him because he once mentioned it was his favourite position when we'd never done it together before and everytime he asks me to get in that position I imagine him doing it with her. I compare myself to her constantly and I feel like I don't measure up. It's just little stuff like this that is driving me crazy!

Can you give me the gist of the text in a nutshell?
<bot>: I am insecure over my boyfriend's relationship with his ex and it is made worse because I know she wants to get back together with him. It is starting to push me away from him because I am scared of getting hurt.