It Can't Be Mutual Love!!
I can't remember this quite well. A guy who has a long-term one-sided love for his friend, get the chance to live with him or confess to him or something like that (I don't remember), the point is that the friend ends up knowing about the prota's love.
Beta Kare
A guy confess to his coworker but his coworker is in love with hus childhood friend, despise that they start to date.
Before I Close My Eyes
The uke liked the seme since he was in high-school(?(I don't remember since when he liked him) and then they became sex friends, in the end it turns out that the seme thougth they were a normal couple since the beginning. There's another story about the uke's best-friend and a guy that likes him and I can't remember if there are other stories. I liked the story of the best-friend, I didn't love the first couple, specially because of the uke. I would have prefered the entire manga going about the uke's friend.
Himitsu no Love Sensation
Spin-off of Family Simulation, I loved the story of Masaki and Daichi. The first couple... meh.
Hana ni Omoeba