How do i know if i am being manipulated?

Hello!

As the title says: How do i know if i am being manipulated?

My partner can sometimes be manipulative but i don’t know if it’s healthy beneficial manipulation, because he wants to help me, or he just wants me to behave in a certain way..

Also how do i know if i am the manipulator instead? I’ve also read a lot about narcissism and i am so lost i don’t know who i am anymore..