Responses
Maybe Recipe no Oujisama
specifically this chapter http://www.mangago.me/read-manga/recipe_no_oujisama/mf/c002/
Yes! Thank you so much!
There was a yaoi where the characters needed money for something, so they got jobs as models for fujoshi BL artists and had to do all kinds of poses so the artists could practice drawing.
I believe there were four guys, and two of them were possibly a couple, and the other two guys were beginning to like each other.