ldr breakup envy

so my long distance boyfriend broke up with me about two weeks ago, after he did he tried to get back with me and I wasn't having it. it's now been two weeks and he's already with another girl who he's very proudly putting all over his social media. I know I had the chance to get back with him, but I don't know if he's doing this to make me jealous or if he's actually happy. I've felt sick with everything I've seen and I'm trying not to look at it but it's everywhere. this is actually fucking with my mind because it's making me realize how insignificant I was, enough for him to replace me that quickly with someone who's way more attractive. my heart is broken.