You will trust other guys in time mate, it will just take the right person. Yes there are shitheads out there, both guys and girls who will continually just use people to get what they want (i.e sex, money etc) but there are also decent people, and you will find someone like that eventually. Dont give him a christmas present, either get your money back, or is there someone else you can give it to? Dad, brother, lad mate etc?
As for the coat, if you want to keep it go ahead, tho it may remind you of him and therefore wont help with the getting over him...if its a nice coat you could sell it or give it someone else if your feeling nasty...but simply giving it him back in passing or dropping it round his house may help with the closure.
Go out with your friends, have some fun and concentrate on your school work...another guy will fall into place when the time is right
best of luck -x-
******* 7 Times World Champion Michael Schumacher - the ultimate sporting hero *******