Disclaimer: I don't own Roswell or the Covenant. This is my take on how things might have happened had Liz made a different decision.
Max Evans felt a little frustrated when he saw his Liz getting out of the shiny silver Mustang convertible at the Danvers home. Tyler climbed out of the Hummer and swiftly placed his arm around Liz's shoulders. Then he watched as the brunette leaned over and placed a sweet kiss on her lips. Maria had to restrain Max from going and running up to the gate screaming. "Max you have to understand that Liz has finally moved on; Why can't you just be happy for her, Maria asked?" That only served to make Max feel more enraged. "She is not supposed to be with anyone else; she is supposed to be with me, he shouted." That got a cold laugh from Maria, "Max do you even hear yourself she is obviously happy and where and with whom she wants to be."
The members of the covenant all went into the Danvers family manor and began to work on homework that was until Caleb got the sense that something was off. He could not place the exact person that was using or rather disturbing the power that was placed to protect the manor. His eyes flashed black and he proceeded to reach out with his powers to find out what was going on. Once Caleb had found the source of the disturbance he proceeded out towards the little red Jetta. He found a very perturbed Max Evans pounding on the door of the manor. Approaching the alien King he couldn't help but chuckle. "I'm Caleb Danvers, how can I help you?" Caleb's rather calm response seemed to put the other man on edge even more. "I want to speak with Liz, Max commanded" In short order Caleb was getting tired of having the same conversation over and over with this man. Alien King or not, Caleb was ready to teach Max Evans a lesson in manners. That is when perhaps the most devious idea occurred to him. "Let me explain a few things to you Max, will you come into my study?" Max agreed somewhat reluctantly and followed the older boy into a lavish study with a large mahogany desk and several leather chairs.
Caleb's eyes remained black and continued to be so as he began the conversation he had planned. "Do you know where you are, Max or Who I am?" He heard a gulp and saw a flicker of emotion in the alien's brown eyes. To Caleb this indicated that Max had probably heard something. "My name is Caleb Danvers as you have been told. If you do not leave us and Liz alone then you will find out why everyone in this town fears us. If you need any more of a hint as to what you are dealing with, I'll gladly show you." This was the first time that Caleb felt comfortable with the idea of using for any reason. This had to do with protecting Liz. Max looked at the older boy and decided that Caleb Danvers was not someone to take lightly, he'd be back but later and when they might have a plan. Now that they knew that they could get into the Manor he was more confident but he could not ignore the nausea in the pit of his stomach as the veiled threat.
Caleb swiftly saw the alien out of his study and home. He watched to make sure that the Jetta left the grounds and then returned to the others.
"What was going on", Pogue ask somewhat uncertain of what made his brother leave so suddenly. In two words, "Max Evans" Caleb replied. I really am so sick and tired of him and the problem is that although our natural bonds to Liz have obviously remained intact I want ensure he can't hurt Liz ever again. We need to take the appropriate measures to limit his access to her further. From what I have managed to grasp of him he will be back and he won't put up a fair fight.
Caleb looked across the room to where Liz , Tyler and Ried were all spread out on the floor working on the days English assignment. It just did not seem right that Max had treated Liz as he did and then was trying to disrupt Liz's happiness. Caleb was certain that this would become a fight and he intended to be ready for it.
Max had noticed which room was Liz's while he waited outside pounding on the doors. Late that night he returned and slowly climbed through the window and into Liz's room. He looked over and saw her sleeping. He walked over and kissed her to wake her up but Liz woke up doing something she had not done before in the time he'd known her. She woke up and moved her hand forward sending an airwave at him. Max flew into the wall on the opposite side of the room. That of course woke Caleb who came down and was in none to pleasant a mood. They decided that they'd lock Max in the basement securely and deal with him in the morning.