Macy and Galvin's relationship starts off as friendship when Macy moved to Hilltowne to work at the lab, but Galvin would always hint at wanting more.
While walking, Galvin tells her he can "lean on him", hinting he likes her. At the bar, Galvin tells her doesn't know her, but he would like to however Macy isn't ready to open since she doesn't who know who she's.
With a little help from Maggie and a near death experience, Macy kissed him.
A couple of days later, Galvin asked Macy out only for her to turn him down.
He eventually breaks up with his girlfriend whom he met shortly after getting the message from Macy. Macy eventually asked for him to give her another shot to which he agreed to.
Galvin learns about the existence of the supernatural world and Macy kiss him.
At the end of the episode, Macy and Galvin have sex for the first time in her bedroom.
Galvin returns after a four-episode absence and he and Macy have a romantic dinner. At the end of the episode, Galvin breaks up with Macy as he doesn't want to be involved with Macy's darkness.
Their relationship permanently ends when Galvin sacrifices himself to save mankind. In the end, Macy mourns Galvin's loss.
- Galvin is the first sexual partner in Macy's life.