The one-sided version of this may be a Villainous Crush. See Foe Romance Subtext for the less explicit version of this, and Fatal Attraction when it's more dangerous. Men’s tendency to cheat on the women they date and even have strong feelings for is one of the most common and the most painful issues that women have to deal with in their relationships with guys.
May lead to The Masquerade Will Kill Your Dating Life if the pairing is ultimately incompatible or too unstable. For double points, they had this relationship in the sequel series as well but in reverse; Silverbolt's spark was in one of their foes and Blackarachnia was determined to convert him as he had converted her. If you are a peaceful person, you might find yourself constantly fighting. You feel like there is something seriously wrong with you. You might say that you aren’t comfortable staying overnight together–your partner does so anyway. He or she might get upset–especially if you try to break up with them or say that you are leaving–however, there is no underlying remorse for hurting you. He or she might say that they are sorry if they hurt you (hit you, scream at you, cheat on you…etc.) and promise that it will never happen again, but their apology is more manipulative than sincere. They might speak badly about a previous partner, claiming that their previous partner was crazy, or a bitch, or an asshole. They will make you feel like you are the one that is going crazy instead of them. You might worry about what you wear and what you say and freak out if someone changes your plans or something unexpected happens that you will have to explain later. You’re not quite sure what will set them off, but you are afraid that something you do is going to make them lose their temper… You might think that the Bears are the best football team–your partner will convince you that you are stupid for thinking so because they suck. They might talk about cheating on an old partner, or be proud of their reputation. It seems like your partner is two completely different people. Your partner finds faults with your friends or makes you feel bad or uncomfortable about any time you spend with other people. You want to believe that this is possible, but the cycle keeps repeating and each time your self-esteem is chipped away at, bit by bit. He might hit or kick your dog whenever he comes over. Each time he hurts you, he apologizes and promises that it will never happen again or that he will change. Your partner knows your weaknesses and he goes after your most vulnerable parts, hurting you where he knows it will do the most damage. You feel ashamed, lost, alone, confused, numb, afraid, crazy, stupid, ugly, fat, worthless, embarrassed, unloveable, wrong. Your partner tortures animals, is mean to children, or nasty to waitresses. One day, he is caring and loving and wonderful, and the next he is hateful and raging and mean. You are afraid to talk, or when you do talk you feel like you are never heard, your words are taken out of context, misunderstood, or blatantly ignored. In the beginning of a relationship they might seem like everything you ever wanted….usually this is because they are trying to act like everything you ever wanted. You have no support group and therefore your partner gains more power. He or she might be mean to people they think are “below them” or people who are defenseless, like babies or children.