I've been betrayed by Christians more than by nonChristians. Many times too. First you must forgive them. You already know that....Second...You have to remember that they are people, only people...and they are full of holes...rotten spots. Then they are sometimes taught silly things like, everything they have, everything you have belongs to God not to you or them. So they tend to get careless...Lend them a mower and have to rebuild it after you've gone to get it back a month later......Lend them your car and ....oh big mistake!
For some reason, Christians, and not just the new Christians, have a 'peculiar' way of thinking....Too much churchy doctrine and not enough Word...