So I’ve known this teacher for a few years and I absolutely love the subject that she teaches, it’s my current favourite subject even though it’s extremely hard especially at this year and it’s also my last year at school. A lot of people in my school also like her and have her as their favourite teacher but I think I almost care about her too much? I’m a straight girl and I don’t understand why I feel so attached and want her attention all the time? And if she gives any attention to other students I do feel quite jealous even when it’s my best friend that I sit next to in class, It makes me so confused and even made me question wether I felt any romantic emotions but I don’t think that’s the case as again I’m straight. Anyways I always go to her if I’m feeling upset or want to talk to her about anything really. I acctually sometimes even make up excuses just to see her. She actually reminds me a bit of my Mum as well which is quite random but a much much nicer and better version of her if I’m honest haha, I don’t have a very strong relationship with my own mother but it’s not the worst relationship either so I don’t think that’s the issue anyways I want to talk to a therapist about it to know if it might be any past problems that I’ve had but I’m not sure? Anyways yeah any advice would help, thanks.
I’m not sure this is the place to be bringing up these concerns; however, it seems like you have some things to work out, so I’ll try to help as best I can. I want to start off by saying that I have no authority to be giving serious advice, I am neither a parent nor a trained professional, I’m just a peer, giving her opinion.
It’s not unusual for students to have favorite teachers or even for students to feel connected to their teachers personally. These bonds can be strong, and beneficial, especially if you find this teacher to be a supportive figure in your life. Where you might face some issue, however, is if thoughts of this teacher impede upon your ability to do classwork, to interact with others, or get in the way of your other relationships. Teachers are here to help and support students, but not to give them special attention or promote unhealthy behavior.
If you are concerned with where your relationship is headed or about your own feelings; I would talk to someone (be it the teacher herself or a trained professional like a school counselor or a therapist). Try to navigate boundaries with this teacher, find out where your relationship may pass into an uncomfortable or unhealthy zone and identify areas of concern. Also, explore your feelings of jealousy, as this is not a common response to have in your situation (at least not in my experience).
I hope that you are able to reach a point where you feel comfortable with your interactions and develop this relationship in a healthy way. 
Thank you for your comment I really do appreciate it as it’s something that has been in my mind for a while and I’ve never really thought about what to do about it or even wanted to talk about it. The way I feel about her thankfully doesn’t make me distracted in class if anything I try to do better so I can please her and so I know myself that I’m improving in her class however I do find myself still feeling so attached and just wanting her attention all the time, and I do feel like she does have favourites in the class and I’m not sure wether I’m one of them and that honestly makes me quite mad and upset at times but it is something I’m trying to work on. And it’s honestly made me so confused about myself like at the start when I first had her as a teacher I was a new student and I didn’t really think much of her but that she was a very good teacher, I’ve only started to feel these things for the past year really. I’ve let her down in many ways and when I do I feel terrible and like I just failed as a person overall. I’ve mentioned it to my friends briefly and they think that it is quite weird and they do question wether I’m starting to have romantic feelings for her but I know that that’s probably not the case as she is more than twice my age and she’s just not a guy and she’s my teacher. But maybe because I’m not so close with my own mother and we constantly fight that I seek that kind of attention elsewhere? Anyways yeah I’m just trying to stop seeing her so much even though it is quite hard and I’m just trying to see her as a teacher not a friend however it’s so hard and I can’t really help but feel what I feel towards her 
I felt like this with a teacher I had as an 8th grader (I’m a senior now). I was her TA and we’d talk all the time about drama, boys, her personal/family life etc. I didn’t realize this back then, but she wasn’t being professional at all by engaging in that type of conversation with me. I’d try to stop seeing her so much and maybe try to go to friends for advice/to talk instead. Good luck!