Perry is the kind of oblivious guy who would invite Cherry without even remembering about her history with Lena. But it would only make a bit of sense in the path where Cherry kisses Perry, so I don't think she will be there and if you helped Perry with Cherry you might get a line from Perry saying that he invited her but she was busy with work/family/whatever or she refused once she knew Lena was going too.Lena strikes me as someone who holds a grudge. She won't care how remorseful Cherry may or may not be, she only sees her as the girl Axel cheated on her with.