Help?! My sims hate each other! ):?

Ok, so I had 2 sims (teenagers) ad they had chemistry ad they kept flirting and stuff, but then he caught her cheating on him! He is now furious with her :s I used boolprop testingcheatsenabled true so they are back to 100, but he is still *literally* furious at her! How can i thaw out the relationship? Thanks!