Obfasculated
You're stuck on your ex like a gluey mess. They ran because they were scared of love, and now you're stuck in your head like a broken radio that won't shut up.
'I can't stop thinking about her even when I'm eating pizza.'
'I texted her in the middle of the night like I was possessed.'
'I can't stop imagining us together. It's like I'm stuck in a dream.'