Free! dj - Ring My Heart Bell
The first time as boyfriends
Free! dj - Doushiyouka
How dare this author make me like a ship besides Haru/Rin! :-P This is an interesting premise. Makoto and Rin get into a physical-only relationship, but Rin becomes increasingly bothered by Makoto's long-standing feelings for Haru. Makoto also seems to be conflicted about exactly what he feels for Rin. This also contains Rin/Nitori (largely one-sided emotionally) and unrequited love for Rin on Sousuke's part. By the same author who wrote about Naoki (single dad with a daughter) and Yosshi, the customer at the restaurant where he works.
Free! - Baby Baby Baby (Doujinshi)
In which Makoto has to judge a swimming contest to determine who tops: Haru or Rin. Okay, that's the last panel but that was the best part.
Free! dj - Goodbye, Lonely Aquarium
Free! dj - Loop the Xth Day
Rin is stuck re-living the day Haru confesses to him. (Ambiguous but hopeful ending! I initially skipped it because of the rating but I actually really liked it.)
Free! Dj - Awkward Sleepover
Rin convinces Haru to confess to the person he loves, which leads to Haru kissing him and Rin being confused. I read this as one-sided love on Haru's part, and Rin being willing to go along with it in the moment for Haru's sake. It was bittersweet for me.
Free! dj - Halloween no Yoru ni