whoa thats alot are you rich?! That is very wrong. Do you mean your giving it because your having problems so you think thatll fix things, because something like that needs to be talked out. And if not, then if your having problems and he leaaves you, he also take your $5000, so.
Give as in gift as opposed to loan, would be your choice. I wouldn't LOAN someone money (especially that high an amount) in almost any situation. If you have the money and wish to give it to him for his use regardless of how you feel three days or two months from now is totally up to you.
Depends on what you mean by "problems". Is it wrong? Depends on one's definition of "wrong" or for that matter "irrational", or even "brain dead". I could use 5 grand. Give it to me and I won't cause you any problems---Swear.