As Long As We Stay Together (if we just stay together) by herothehardway

Adora is an Astrophysics PhD student who just can’t seem to write her dissertation. When the opportunity arises to work at the IceCube Neutrino Detector at the South Pole, she jumps at the chance, even though she’ll be stuck there for six months during the Antarctic Winter. When she arrives, she discovers that her research partner is her former roommate, former teammate, former best friend, former, well, everything, who she hasn’t seen since they graduated from college five years ago.