Ignorance Is Bliss, Cherish It

I didn't sign on to AIM for about a week. I didn't want Frank to talk to me. He was starting to scare me a bit. But after a week had gone by, I decided to sign on. Guess who IM'd me the second I got online.

PansY: where have you been?
IrisxX: i've been at home..just not on the computer
PansY: well, i missed you
IrisxX: how can you miss me? like i keep telling you, you barely know me
PansY:so? that doesn't mean i can't miss you
IrisxX: well i want you to leave me alone
PansY: why?
IrisxX: to be completely honest, you creep me out
PansY: I see..I'm sorry
IrisxX: does that mean you're going to leave me alone?
PansY: I can't..it's too late now
IrisxX: what do you mean it's too late??
IrisxX: answer me!
PansY has signed off

"Damn it!" I cursed. He was making me mad. I didn't understand him. What did he mean by 'it's to late'. Too late for what?