While this is at first sight evidence that Leon has finally given up on his fleeing and his his virginity all the same, a closer inspection will show blatant signs to the opposite!
Take a look at what Claire says, for instance. The original meme would have her say "I'm stuff", right? But here, she says: "I'm a stuff". A stuff among several others, not necessarily linked to Leon!

THE STUFF LEON WAS DOING COULD BE ANY OTHER STUFF!

May I also point out which picture was used to depict Leon in the third box?
This is a screenshot of a mod with exaggerated facial expressions. Now, why would OP have chosen such a peculiar picture? I'll tell you why. TO REFERENCE THE "NO WAY FAG" MEME!

The way I see it, Chris is falling victim to a quid pro quo. Claire has at no point been impregnated by Leon, and is just messing around with the both of them. Or perhaps, even worse, deliberately lying to her brother's face so that he leaves her alone and she can go back to rubbing her pussy! In the most wholesome – and least Leon-seducing – fashion!