That was my plan. To freeze her out completely but without letting her know that, like Shark suggests. Since we met by accident and she said that she sometimes misses me, it changed a little. But now I'm back on track with no contact and I won't reply to any texts (unless there's a really, really, really good reason).
Enough about her. About me: I still am not able to let go completely. I'm just going to repeat in my head ''I am single'' until it sinks in. In the meantime I am still trying to cold approach and make small talk (without much success).