I'm Not the Same...Yet

I really don't understand how Jason could have this much affect on me. I've been so down lately since the breakup that everyone are noticing that I'm not the bubbly upbeat person anymore. Not everyone at work knows what happened so they'll come up to me and ask me to smile or if I'm ok. Which makes it worst for me cuz I have to put on a smile and say 'yea everything is fine.' I'm trying to be the same person I was before I met Jason and while I was with him, but I can't. I just woke up this morning angry because I had a dream about him where it was like the night we had dinner and he was a total douche bag towards me. I thought I've moved on but I guess I got hurt more than I realized. I have the best friends who will keep me company and ask me how I'm doing and try to cheer me up. I'm greatful for them. Well, it has only been a week since we've broken up so I guess I'm asking too much of myself to get over him already. People keep telling me it takes about half the time we were together to get over someone. So am I supposed to feel crappy for a month and a half? I hate this transition.