I know it's a lot but I really need your help! and if you could just help.. please and THANK YOU!!!!!?

[Lyall]

If it is them, then it doesn't sound like an altogether healthy way for them to be getting back in touch with you.
If it truly is a friend, then it's a little weird for them to just start a conversation like that, I agree.
You could always give the friend your email address and say that the ex could contact you through that.
But it is important to remember that you are ex's for a reason. Whatever that reason is, it meant enough at the time for things to end.
Sounds like a right awkward situation though, I don't envy you.
Try not to get too ahead of yourself. Surprise contact can make emotions flood back that aren't always completely sincere.