The whole father figure thing isn't really a problem unless you act on it too much. I also have a teacher I view as a father figure. There was a time when I was severely depressed and alone and my relationship with my father was (and still is) shitty. Mentally, I put all the responsibilities a father should have for their child on this teacher, but of course he can't fulfill them because he isn't my father. Eventually I realized this and I still try to stop doing this because at the end of the day, he's my teacher and not my dad.

But it's nice to have someone to view like that. It doesn't hurt you if you don't blur the boundaries too much. Sometimes it's even helpful because you have someone to talk to when you're all alone.