<human>: I've had this massive crush on my teacher (who invited me to go out, we ended up getting drunk, kissed and hold hands, all lovely until he says he's not single and a month later completely starts avoiding me). We haven't spoke in five months but we occasionally saw each other in class and we'd both avoid looking at each other and he (very awkwardly and obviously) would dodge me. A month ago he messaged me saying he has been going through a rough period ("funny" because this situation triggered me to become actively depressed and I'm still in counselling) and apologizes for not getting back to me. I replied to him quite coldly as I don't want anything with him. Since he teaches in two different universities, he has now left his job at the one I'm attending, which I only found out last week. He's also in a band which is becoming considerably famous around my area so I see adverts for his band every now and then. I've committed the big mistake of seeing this new videoclip and seeing him reminded me of why I had the hots for him in the first place. Now, I can't stop thinking of him and knowing how much this whole situation affected my depression in the past, I'm afraid of relapsing. Any advice on how to get over someone for certain? It's been nine months of me liking this guy, five months since my depression became active and four since I've started counselling.

Provide a brief overview of the text.
<bot>: Starting to like this guy who affected my depression, the situation is leading to nowhere and I'm scared of relapsing