Panda by
spymaster
Sam had always shipped her two friends, Kara and Lena. Frustrated with the gay idiots, she planned to make a road trip to bring them together. Unknowingly, during the trips, old feelings came up and the result was surprising.
Voices by Local-Asshole
Lena isn't a fan of socializing, since they often lead to her psychopathic brother or the fact that she's blind. Then she meets Kara her first year of high school, but as their friendship overcomes many obstacles throughout the years, Lena's family life continues to drive a wedge between them. But that's not the worst part. Because Lena is also finding herself falling in love.
Scum’s Wish by
KoraSonata
Lena is in love with Kara, and since buying CatCo, Lena now gets to see Kara all the time. However; much to her dismay, Lena discovers that Kara is in love with Mon-El. Meanwhile, Sam has fallen for Alex, but is devastated to discover that Alex is still in a relationship with Maggie. Together, Lena and Sam decide to begin a fake relationship to satisfy their loneliness from their respective unrequited loves.
Collateral damages by
spymaster
What I picture from the promo of Supergirl 3x15 that happens between Sam/Reign and Lena in the lab. It's based mostly on canon, there are ReignCorp (Reign/Lena and also Sam/Lena) and minor SuperCorp.
Or the fic where there is a possible romance for Lena and Reign.
And it's Reign/Lena endgame.
i carry your heart (i carry it in my heart) by
hrwinter
Lena breaks her ankle, and Kara insists on carrying her everywhere (to meetings, to galas, to conferences, to press releases.) Lena spirals.