i read it this year i dont remember well but it was about this guy with a big chest and he needed a job so his friend recommended him this kinda.. place?? where these dudes can get paid for getting their Biddies Sucked. and there was this one scene where the friend ended up seein the dude doin his job and getting his Biddies Sucked and so he got jealous idk

I believe the manga you are looking for is Momichupa Oppabu Osu Time by Ikuyasu

https://www.mangaupdates.com/series.html?id=142039

thats it! thank you so much!!