Guys, I need a hint how to get the masturbation with aunt and petting with stepmom, any clues?
Keep doing things that raise affection and tension (for aunt: greeting when she arrives, sometimes during dinner her sexual tension increases, keep discussin interests and chat all options). After a while she will let you watch tv with her, start cuddling and after that doesn't increase tension anymore watch adult shows or porno and remain distant from her when watching; eventually you should have the option to masturbate (she will get angry if your tension is not high enough but it will still increase, keep doing that and increasing opinion so that you will be able to masturbate and she will pretend not to notice but get aroused)
Petting is with Mary, not with stepmom.
Start helping her doing "boyfriend practice" in her room, keep doing both getting used to talk and kissing, she will gradually wear more revealing dresses and eventually you can start petting.
As a general rule (for others characters too), try everything. Doing only the last unlocked option is not necessarily the best choice, and sometimes even actions that make a girl angry are needed to progress. Sometimes going back to an old action can unlock something new once you have reached a certain threshold, and so on. Being too fixed on one action will make you stuck without progress.