Okay this manga is yaoi. It's about a guy who was super duper into this "woman's" legs on the internet, but when his roommate or friend or whatever went to go take a bath, only to find out when the other guy when he opened to door to realize that it was him that posted those photos. If this description looks similar to one manga then please tell me.

First story "Be here to love me" from Dame BL.

"Be Here To Love Me" is also the fourth story in Bara no Mori ni Ita koro.