Thinking of telling my friend I'm a lesbian so he'll stop being attracted to me

Basically I recently found out that my friend had a crush on me. A big crush. For a LONG time. And honestly its beginning to get uncomfortable because I don't feel that way about him at all and I've tried telling him a few times but it felt like it wasn't really clocking for him.
I miss being treated like a normal human being and him not being infatuated with everything I do. I feel infantilised during most of the conversations we've had and I just want to be able to talk to him maturely and be respected for my voice. Not just because being associated with me makes him feel so 'cool' or something.
Anyway it seems like he's finally realised its not gonna happen but if not I might just tell him I'm a lesbian. Obviously my only concern with this is having to maintain the lie. Especially if it somehow makes its way back to my parents because that would disturb the peace in my household. Also if I develop feelings for a guy he'd probably end up finding out, which of course wouldn't be good.
Anyway what do you guys think this is just an ad-hock idea I know its stupid but a part of me is tempted. I know he'd believe it and honestly I don't think I could keep being friends with him if this continues. I don't want to lose him but at the same time I want to/need to pull away from some of this enmeshment because its making me depressed and overwhelmed.