Do you think they'll ask to borrow it again? Your guess is as good as mine.
- They kept mine for so long that I needed to go and borrow one myself. (Now something about that doesn't make a whole lot of sense.)
- They broke mine and said nothing. Therefore, it's will I repair it / get a new one. They'll never know in a hurry.
- I've often heard, if you have to borrow something more than three times, then it's best to get your own. That quota for borrow / lend was long passed.
The thing is, if there's a genuine need, I'm reluctant to lend again since being burnt on the last occasion the memory's painful because I take care of what is entrusted to me and they didn't. I am also out of pocket, which though it may be small it wasn't conveyed to me there was a problem, and since it's small then you can buy your own.