For the most people inside the Fandom, lucas is a person with no interest or even a serve dislike towards touches or signs of affection. This is perfectly fine. My theory is a little different there. Doe to the fact that lucas has been bullied he envolve the strong need to be superior over the person next to him. For example, he throws his food and later the whole plate at Ethan, he kidnaps Mia in front of Ethan taking her right under his noes! Than the scene with the cop were he says that if Ethan is a real man he could stick his hand into the cop. He is not able to take on other man in a hand to hand fight like his father. Because of that he always tries to have something (walls, fences, a computer screen, the party room) in between him and his male victim. He is Physically not able to win a “fair” fight. A woman on the other hand is easily to handle even for a person like lucas. Not only are they (especially Mia in this case) physically weaker and tend to submit themselfs faster than a man would do. While I still don’t think he would actually rape a girl (being a psychopathic murderer and being a rapist are surprisingly two complete different shoes) Yet I do think that he would be that kind of person that would “hold” himself a girl close by that he can make watch how he send people into his party room. (Having her sitting on his lap in front of the screen and saying something along the line “ keep your eyes open sweety now comes the best part”) He needs this kind of attention. The feeling of someone worship him and his “puzzels” (He is filming them so he takes alot of pride in those) This attention does not necessarily need to come from one and the same girl, like he would probably not having hurt feelings if she dies. He’d probably feed her normal food though so she doesn’t turn into a molded, because a molded could not appreciate his puzzels! Maybe I’m wrong, but this is just the feeling I get from him and I wanted to share this.