A very close friend of mine has asked to borrow £50 until Tuesday. I've never lent money to her, so have no idea if she'll be able to pay it back, and it is a substantial amount of money to me. But I agreed because she's recently single and struggling with three children to feed. I just know money can break the strongest of relationships so it always makes me feel slightly uncomfortable. So do you lend? Has it ever gotten in the way of a friendship? Do you have limits on how much you would lend?