The good part, you felt nothing romantically. Part of you (the part that would never tell Regulus) worried that deep down...you would see Sirius and there might...just might be some feelings. Yet, there wasn’t. There was nothing but pity and slight heartache. Sirius didn’t deserve what happened to him. Regardless of what happened between the two of you, as a couple, you would have wished 12 years in Azkaban on him.