Ashley seems to get a lot of slack for her actual treatment of Jay, probably because she's a woman and he's a man and the automatic assumption is that he can leave when he wants and she can't stop him. Shit, I know I'm guilty of it. But if I take a step back and flip the script - say Larissa had hit up a guy on Tinder and met him/didn't meet him, but Colt kept her in the States in immigration limbo while he continued to "enjoy her presence" I'd find him predatory. I felt for Ashley when she found out about the other women, but at that point her options were a) put the kibosh on it or b) forgive/forget/move on. She seems to have opted for punishing him continuously- and people who do that are just as cruel as those who have cheated on them, IMO.
This (bolded.) Olga also appears to really love him now, too. I think the cameras out of their faces (and the uberstress of a new baby and trying to rekindle an old flame during that time) have helped them reidentify what it is they like in each other.