You can't just switch off your feelings because the other person did. You can't just say: " Oh, right! So your plan is, we never see each other again, never talk or communicate in any way. Fab idea, why didn't I think of that? "
So what happens is, you write your true feelings down in a text, simply because you want to share them, and next minute your ex-boyfriend says they are obsessive. They are not. They were just me being honest and open, which, by the way, you are supposed to be in a relationship.