To be fair we don't know the full story and signed messages could have been confirmed via PM or both parties may know each other but it does seem strange to me that a loan was given to an address that OP has not posted here before.
Password has not recently been changed as far as i can tell so loan should be repaid.
Maybe I am just suspicious of everyone these days
Nothing wrong with a bit of suspicion in my opinion.. Seems every other user here is an alt of some low life scambag sadly.
I will say though that the lack of publicly signed address is sort of red flag inducing, hopefully we see no default here.