My ex keeps trying to contact me- reply or ignore?

[>>flicka<<]

He was my first serious boyfriend, and continually lied and cheated on me with his female 'best friend'. After a few painful months of naively thinking he would realize he was wrong and stay true to me, I smartened up and ended things. After initiating no contact, I moved on fairly quickly, and ignored some creepy things he did, like making a fake facebook profile to pretend he was someone else to talk to me. At this point, he was in a relationship with the girl he was cheating on me with.

Anyways, I haven't spoken to or thought about him for years. But recently he's started emailing me, saying he misses me and wants me back in his life, etc. I ignored and deleted the first one, since I'm indifferent and have no desire to have anything to do with him. He just sent another one today, saying how he knows what happened between us was painful and I probably don't want to talk to him ever again, but he misses me soooo much, misses talking to me, and really hopes that I can be his 'friend' again.

GROSS. He is still dating that same chick (this is a few years later) and I wonder what she'd think (she's pretty nasty, and had no problem cheating with him while he was in a relationship with me) of him saying he misses me and wants me back in his life! Also- why is he even bringing this up? He should be over it, and it makes me wonder what he hopes will come of this.

Anyways- should I ignore it again or reply (and say what?)?

- I don't want anything to do with him
- I don't want to give him any thoughts or hope that I might be interested in him
- I'm also kinda offended that he implied I'm still hurting over this and that I'd want anything to do with him- I was over it long ago, and I'm happy it turned out the way it did.
- I'm also grossed out that he's still thinking about me, especially with a girlfriend, and seems to wish he'd made a different choice.

Advice please! I'm tempted to set him straight that I've moved on and am not interested, but think ignoring it makes a bigger statement and I have little desire to be in contact with him at all anyways.
Just wanted to add that I have forgiven him a long time ago, and harbor no ill feelings toward him, but that doesn't mean I want to be friends with him. I've moved on, and don't see what good could come of responding to him- it seems like it might encourage him and give him hope that I'm interested in him, which seems far less 'Christian' than just ignoring it. As far as 'drawing the line in the friendship'- I have no desire for that friendship, that's the point