I need helping finding a manga. There's a very pretty girl who gets a lot of confessions. She may look pretty but she doesn't really act lady like at all so most guys who find out are turned off. Then there was a guy who was such a wimp that everyone kind of bullies him. I think they switched consciousness due to the girl's uncle/grampa's experiment. The girl who is now the guy loves her new life and immediately becomes a stereotypical popular guy and she becomes her best friend's boyfriend. Same thing happened to the guy. I think he was pursued by his best friend. So basically they both ended up with their best friends.

I think this manga was pretty popular but I can't remember the title.

Could it be Boku to Kanojo no XXX?

It is. Thanks!