I think there might be an unintended flag conflict here -- generally, Mark will text Lena if she's flirted with him, or if she's given him a blowjob in the bathroom. If i understand it right, the latter is only possible if Mark doesn't leave with Holly, and Lena only has opportunity to flirt with Mark if Holly is not present, or is dating Ian. As a result, the condition for that particular code excerpt will probably never be met. It doesn't change Mark's behavior that'd occur if it wasn't for this bug, though.