Hello, I'm trying to get back a little on the "shoujou" bandwagon, I feel like I read ever...

Hello, I'm trying to get back a little on the "shoujou" bandwagon, I feel like I read every Yaoi known to Earth so I'm switching to something else for a while. Does anyone know of a good hetero manga with a Threesome? I'm actually curious to know if that exists, I mean, in almost everyone you have a love triangle or something like that, but i never read of an actual threesome, any advice would be appreciated! ;)