How to ask mum for therapy

How do I bring up to my mum I want therapy. I’m 15. Soon to be 16. I want to go therapy. I’ve struggled with mental health since I was 8. I am in a relationship of 6 months, I’ve come to realise I have an unhealthy attachment to him, I love him so much but my whole mood relys on him and I can be obsessed at times. I realise this is not great and I want help. And other things as well lead me to want therapy such as depression. How do I bring this up?

If you have a good relationship with your mum you could just be honest and say mum i want to talk to you about how I feel. I feel I would benefit from counselling because... Also, some schools offer it for free so you could ask your tutor if there is a possibility of you getting it at school. I used to miss IT for mine. Counselling is very expensive so this might be worth seeing is a possibility.
Re- unhealthy attachment that is common in young people's relationships but is not great. It is good you have identified the issue and now you can work on the solution.