what did hiroki mean when he said that he and riku did it already? does he mean sex?

I wanna know

someone answered my question in another comment i made

"I think it is a faulty translation. It should be since hiroki barged in to MC room to threaten him he saw that the MC had posters of BL couples on his wall. So he thought that the MC probably shipped them and said "well you are probably shipping me and Riku in your delusions". And MC was taken aback that he thought so."

MTL translations have a lot of inaccuracies so it was probably that

Ohh okay thank you!!