There was no way around this situation. He could act like it wasn't a big deal to stay away from her and leave her a lone but they both knew that that wasn't true. Alexander liked to be in control and Henri was taking the control out of his hands. Then again, if he "behaved" and left her alone that was giving him some semblance of control of his fate but not enough that he liked it. For now he would go along with this little charade, until he would find something that he could do about this. He needed time where Henri was concerned. He hadn't realized how conniving she was, just like he was, but then again she wasn't in Slytherin for nothing. 

“So do we have a deal? You leave me alone and I’ll keep your little affair a secret? I mean, until you blow it since we both know you’ll likely screw the pooch.” She grinned rather deviously. “No pun intended.”  

He took a step toward her, already nearly breaking the deal that they had going on. He froze and swore, looking away. "Just...shut it," he told her, raking his hand through his hair before he looked at her. "When I make a deal, I keep it," he told her, a hard edge to his tone. Dropping his hand Alexander gave Henri a nod. "We have a deal. I'll leave you alone and you keep your mouth shout." If one word was breathed of what she saw, Alexander would make sure that she regretted it.