Ex has screwed me up. Advice?

Terrible breakup. Says she wants to be friends. Goes messier. Says to be friends again. She get's a boyfriend. Says she doesn't feel comfortable talking to me. Then she starts talking to me again, difficulties with her new boyfriend. Then she get's friendly again. Then she turns and says am dead to her wants nothing to do with me etc. etc. Realised she's worthless. I cut ties. Now I'm in some horrible rut. I feel really weird. Like, almost... depressed? I dunno. I don't know, why or what it is. I suffer from OCD, and years back I was a recluse, couldn't leave the house. I feel like am going that way again. I don't want to leave the house, I'm very vacant at the moment. I can't be bothered doing anything or being with anyone. Dunno what it is, can't explain it. Seems to have gotten worse after yesterday - before I changed my number and deleted hers - that the reasons she ended things is because I'm an over analysing, worrying mental case. Also told me she now knows what 'love is' with this new guy, and never meant a word of it when she said it to me, lol. The hell can I do to fix myself??

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