secret i really really really like this girl who has been with her girlfriend for 2 years and i think she likes me to but i dont want to get in the way of her relationship so im just her friend and she has no idea that i really like her

Well let her know I guess. Tell her you respect their relationship but you can’t help your feelings. Make sure she knows that she could stay with her girlfriend and you’d be okay with that. But if she likes you too then at least now she can make a choice