as for list of games which i totally forgot:

360:

1) Gears of War 1+2- the bets of its kind
2) Lips - wanna be Singstar
3) Fable 2
4) Forza - if she into racing


PS3:

1) LPB
2) Resistance 2
3) Home (girls will love socialising here and it is free since she is tight on money)
4) Buzz
5) Singstar - original and the best and the addition of Singstar Abba being released for xmas
6) Heavenly Sword- Kick ass sexy female character who shows what a warrior princess really is with a kick ass combat system that truly is unmatched in its genre.
7) Uncharted

I've only listen console Exclusives since she can pick the others up on any system.

PS3 why don't you give her your 360 (being a good friend and all) and then she can go buy a PS3. then she won't need to worry about her dilemma :p

Been there already my friend

No thats just it.  She likes games LIKE those.  She's also mentioned God of War, a passing interest in Final Fantasy and Grand Theft Auto.

I'm really interested in 360 games I may have forgotten to mention, and the PS3 library she may be interested in.

Dude, told you. Give her your 360 and have her buy a PS3 :p Problem solved :p after all, what are good friends there for :p 

Does she seems to like LBP? There´s Resistance1 and 2, Killzone, Heavy Rain, Infamous, twisted Metal, a possible Halo 4. Tell her to decide based on games, cause the x360 arcade will require her to spent at least $70 more than the $199 they say it´ll cost(LIVE + Intercooler). She said if she likes multiplayer? Beacuse than a x360 suits her better. But if she´s interested in a bluray(hdtv can come later), get the ps3. Does she have a ps2? I saw at Amazon a $399 80gb bundled with Motorstorm, that does have BC(limited). Flood her with information. But don´t loose the opurtunity to join her when shes roaming the stores, perfect time to talk about other things than games.

360:

• Gears 2
• Fable 2
• Lips
• Left 4 Dead
• Banjo Kazooie
• Halo Wars

PS3:

• LBP
• Resistance 2
• Motorstorm 2
• Flower
• GT5 (whenever it gets here...)
• God of War III
• inFamous
• Killzone 2
• Team ICO game (if their olympic schedule lasts, it should be out in '09)
• Various Singstar games
• Eyepet
• Heavy Rain
• MAG
• Home (Don't know if that sort of thing would appeal to her)
• FFV13

I will gladly admit that I am not that focused on the 360 library, so feel free to add any that I missed.
And then there are of course all the multiplat games, plus the games of the past and future unanounced games (bungie project, super secret game shown to BBC journalist etc.)

I should add, she wont be paying for live and doesnt play online.

I just mentioned LBP to her and she likes the sound of it.

I'm also discussing heavy rain.

Im 90% sure your going to tell her the 360 is the choice of console...

I suggest you give him the guide .....

The affects are clearly evident on the poor fellow  =]

OT: just tell her to get an xbox360 due to her love for fable