Meet Dahlia Asimov.

"He was always so grumpy this characteristic, to most, made Severus about as attractive as a brick wall." Good thing Dahlia, a childhood friend of Severus, has returned to Hogwarts. She may be the only one that can get him to open up and love once again, it is possibly the hardest task she will try to accomplish, but in the end, it's all worth it.