Heart ache

Katie • 22... single
I was with my ex for 7 months... he broke up with me last week over something I didn't even do... well he is now in a new relationship already... how do you go from telling me you love me so much, want a future with me, want me forever to a new girl in less then a week.... I'm seriously just so heart broken my heart is little in a million pieces and I cant take it....