Not many people liked Makarov, let alone fall in love with him, so when you did, he couldn’t help but develop similar feelings. Then, someone gave Makarov false Intel that you were a traitor even though you weren’t; that led to many brutal interrogations until about a month later Makarov realized the intel was false, and you weren’t a traitor. He ran into your cell and held you in his arms, he saw that the love and affection for him in your eyes was gone. And that broke his heart a bit.