The Player and The Matchmaker

Crystal Rose is The Matchmaker. Whenever a student has romantic problems, be it for themself, or a friend, she is the one to go to. Except for James chasing Lily. Yeah, no. The prettiest girl in school, every guy who doesn't have a crush on someone else has chased her. Every guy, but one. What happens when Sirius Black, The Player, decides to chase her? 6th year Marauders Sirius/OC