The Americans....terrible folk they are....always taking advantage of the British!
Perhaps a quick read might refresh some memories here.
A fellow named Churchill was not so dismissive of aid and assistance provided to the British during World War Two.
You might consider the legal issues FDR had to confront when trying to provide assistance to the British.
You harp you had to "pay" for that assistance...but you conveniently overlook you had not paid the Bill from WWI when you once again came with your hand out for assistance in the Second World War.
In December 1940....you were skint for funds to provide for your own defense.
FDR found a way to continue the military and economic aid to Great Britain.
https://history.state.gov/milestones...945/lend-lease