Is it a bad idea to have a friend buy you a binder?

So I’ve been thinking that I’m probably trans recently but I’m not 100% sure, more like 60% so I’ve been wanting to discreetly experiment with some stuff like maybe a binder to start, and see how it feels because I’m not quite ready to come out to anyone. Especially since I’m not sure of stuff. I have a friend who is kinda rich and can also just buy whatever and his parents don’t care or notice. He’s always offering to get my stuff so that’s not the issue. The thing is I’d have to come out to him. And this guy and I kinda have a complicated history together so of all people that’d be one of the worst people to come out to first. I just don’t know what to do I want to talk to people and I want to know who I am and I want to know that I am trans so I can feel comfortable with it. Ahhh. Any advice?