just lovers (like we were supposed to be)

Regulus closes his eyes and shakes his head again, looking pained, then he opens them and sighs. “And your solution to this is me? Pretending to be my boyfriend?”
“Yeah. It's actually bloody brilliant, if you think about it. Everyone will leave happy. I'm going to fake date my way into falling in love,” James announces grandly, sticking his hand out and waving it through the air like he's presenting a banner.
***
Or, the one in which James Potter wants to prove he'd be a good boyfriend to Lily Evans and comes up with the brilliant plan to fake date Regulus Black his way into falling in love. It doesn't quite go as anyone expects.
Task failed…successfully?