Ok! Mine are as follows; Tanya is clearly heartbroken and was blindsided. Things evidently weren't great, but marriages go through nad times, and i think it is clear that is what she thought it was. Jim coldly detached and hopped on celebrity tinder (which can't be that easy to get on, so lots of Jimbot planning there) and is recreating his old relationship again but, with a new woman filling the role of girlfriend fiancée.
Unless things change with his 'mental health' he could be a terrible father and repeat his own fathers behaviour. He has a mean streak, and that's the softer side of it we see on camera. He'll tolerate a kid until it pulls the focus of him.