I'm really wary of lending stuff out to friends after I had a really negative experience. Friend had a couple of (cheap) controllers of mine for a few months, I eventually ask for them back, he says "oh, sorry, I thought I told you, my place got robbed and they took your stuff". I expected him to offer to replace them, but wasn't too surprised when he didn't, as he's broke. This was fine with me, shit happens.
What wasn't fine was when a few months later I saw him playing a show with one of the units in question, and when confronted he said that it hadn't been stolen at all, he had just misplaced it. Jog on pal.