No, No, No, No, No, No, NO!
If I was the OP, I'd be extremely annoyed at that message. Actually, I am annoyed about it. There was a time, many, many years ago that I would have also felt a bit guilty. Not any more.
People fall on hard times as Feek mentioned above, and I'd be the first one to help anyone out. The thing is, and this is what is really annoying me, is that person has made ZERO effort over the years to keep in touch. The OP said himself he's not spoken to them in years, but now because he wants something, all of a sudden he's got in touch.
OP, I guarantee that person won't keep in touch and you'll never see that money again. It's appalling behaviour, what a total parasite. Scum! by all means they can ask other friends who perhaps they have kept in touch with, but to reach out to someone who I'd now class as a bit of a stranger crosses a red line in my book.
I've had similar experiences in the past (I'm sure you have guessed). Someone I used to work with only ever contacted me when he wanted something.
Hello Mr Oracle, hope you and family are ok
Oh hello Brian, yes fine thanks are you
Do you still fix laptops?
Here we go!
anyway, after many years of this I finally replied one day with this
Yes family are fine thanks, and still fixing laptops and pcs
Great...goes on to explain the issue
Send me your email address and I'll get a quote over in a couple of days
Quote?
for the laptop work
Oh, I was hoping you'd look at it for free?
Free? No, my usual daily rate is £900ex VAT
£900!!! are you joking
30yrs experience and I'm very good at my job
Brain, tell you what, I'll look at your laptop if you can replace 4 patio slabs in our garden?
Never heard from him again LOL surprised, doesn't he want to know how my family are?
Then there was 8yrs of helping someone get their life back together who has now ghosted me. I ain't going into that one! or maybe the time I got my best friend at school out of serious trouble, got him a great job in IT at my place, then introduced him to his future wife who also hasn't spoken to me in the last 25+ years.
OP, my advice is either reply back saying you'll put a loan contract together at 8% plus solicitor costs for sorting out the contract or simply just block them and move on.
Whatever you do.....don't feel guilty! I know damn well if I ever fell on hard times or needed something, the only people who'd help me out (if they could) would be my parents.
People take the ****, don't let them.
:edit: It's really annoyed me that he's made the OP feel guilty