Does anyone else stay in touch with their teachers?

Nope I am hoping to do the same. I just finished y13 and am going into uni. Quite similarly to you I have a few teachers (all male) I want to keep in contact with, one having known me for 5 years, and we have been close for 4 (I've been accused of fancying them too). I get why you think it may be weird, but I think you're basing that mainly on how other people see you and your relationships with your teachers. Yeah I guess it's not particularly the norm to have such a close relationship with teachers, especially if they're male and you're female, but it doesn't mean it's wrong or should be frowned upon. After several years of being made fun of for my close relationship with my male teacher, I think it gets to a point where you need to ignore how others react to it and what their opinions on it are. Plus, why is it bothering others so much? It's your life so you shouldn't have to feel bad for wanting to stay in contact with people who have helped you/you've enjoyed the company of.

Glad I'm not the only one! Yeah, I don't see an issue with it, like if it's polite and friendly and you are all adults then who cares, but I have been mocked and accused of all sorts of things, which is quite depressing. Oh well.