Yes. Hehe.
Providing it was done for the right reasons and not for storyline filler and that they kept them together this time. Carl and Chas have never been a hearts and flowers everyday kinda couple anyway so wouldnt want to see them with no issues at all and all happy and smiley etc.
Carl does still love Chas and she still loves him and I think he resents Lexi in a way for not making him as happy as he was with Chas. Like he said, she's funny ( really?), smart (debatable) but she isnt Chas.