The Bermuda

Three college students with conflicted pasts grow closer and form a relationship of mutuality.

Highly sexual content, but focused on everyone involved having a good time.
Ch 1: Intro, angst, MF content.
Ch 2: MM content.
Ch 3: MF content, with some descriptions of MM content.
Ch 4: MFM. Finale.

Content warning, one of the characters has epilepsy. Otherwise should be pretty clear in terms of common tags.