N.K.
This may come across as blunt, but, are you REALLY that hard up to get laid to put up with all this drama and nonsense? So many men out there, why would you be with someone who kicks you out, allows you back in, but only at certain times, when his "friend" that he tried to hook up with is not around? Hellooo???? Does that not tell you what is going on? He is playing you both like a fiddle, the other woman at least has no idea that you're in the home when she is gone, but YOU know she is there, sleeps in a bed next to his, and had intentions to hook up with this man all along, and you're TOLERATING all this and sleeping with him while he sleeps with her too?!??!
More than likely, that bed next to his is where her KIDS sleep, while she sleeps in the same bed as HIM. Like I said, you're either desperate or you must enjoy drama to put up with all this BS! Have some self-respect. I truly feel sorry for this woman's kids, having to put up with a revolving door of men, being left in the care of this filthy jerk who is a stranger to them, and witnessing his interactions with another woman while their mother is out. How sad. I bet this isn't the first household they have been shuffled to, and this is the example they are growing up with. Sad, really, to grow up with so much dysfunction. This man is not fit to be a boyfriend, much less a stepfather, but they're the ones getting the shorter end of the stick because they have no say.