So my ex and i have been broken up for 7 monts. I thought I was over him but?

lately everything seems to remind me of him. LIke today I was watching a show and i'm not a neat freak and he was. and i remembered something he said to me so many months ago and it aches. I've told myself I deserve better but I saw him today and my heart just ached to the point where I felt i was going to throw up. Don't tell me it's heartache because I already no that. But I'm pretty sure I'm over him no erflies or blushing cheeks just this hollow ache. What's wrong with me?