Don’t be so hard on yourself, without everything you’ve been through anything that seems familiar and better is going to glisten. But the last thing you want to do for your mental health is make fast decisions. Blue eyes may have really changed, I hope so for your sake.
However, if he really has changed and he really does love you he will be patient and by your side while you take the time to sort out everything back home. And if that takes a few weeks or months and he is still being the beautiful man he has shown himself to be over the eeek then you will know it’s the right move.
The other thing is, as I’m sure you know, animals are very intuitive. See how he is around them when you introduce them to him and gauge their reaction. They can smell shit a mile away! Trust in the fur babies!