I'm in the same boat, minus the stealing. And I see you have no answers, so if and when someone replies to my situation, I'll surely get back to you.
I'm in the same situation. I sometimes lie even if it the topic is completely unrelated to me - and I don't know why. The crying thing is also the same and I don't have a reason for it, as I expect you don't either, like you would expect someone to be upset for a while if someone had died or something. But nothing's changed. I do believe it will get better for myself and you and anyone else in the same boat, but I keep reminding myself that if things get too much, it's okay to bail, leave or just get out. It helps me to cope with day-to-day things, and if you let someone know, maybe it will help you too?