"I Heard It Through The Grapevine" by Marvin Gaye
Wilson/Chase with hints of past House/Wilson and potentially future House/Wilson/Chase is you squint and let your imagination run wild after the end scene.
House hears a rumour on the Princeton Plainsboro grapevine that Wilson spent the night with Chase. Becoming suspicious and determined to find out the truth, House starts pestering the Aussie and his best friend only to find it wasn't a rumour at all. House becomes jealous that he doesn't seem to be the sole focus of Wilson's attention anymore until he bites the bullet and asks Wilson if there is anything serious between him and Chase. Wilson admits his feelings for the younger doctor, leaving House with no choice but to deal with it...