so my friend just text messaged me again saying theres only 13 trophies (no platinum) and that as soon as we log in, we should get them all to pop at once since he says we already previously did everything

Yeah I heard it was all retro active.
Do you have a list?

its in my trophy collection
im going for the 100%, I used to be an active PSH user so most of the trophies popped when I logged in, but not all
already unlocked like 9 of the 13
2 trophies are date/time related, im going to see if I can glitch them by adjusted the time/date in my ps3 settings

Why are half of your plats missing time stamps?

only a few games should be missing timestamps
ALL my plats should have timestamps though
the ones missing timestamps are because I didn't always have internet hooked up to my ps3 when I unlocked whatever trophies

7 I count.

That's just weird

thats very weird
when I view my trophies, all 50 of my plats show timestamps
but a few games like dante's inferno, deadspace, darksiders, black ops, sports champions and resistance 3 I unlocked trophies in before I had internet
thus giving me missing timestamps in those games

Yeah this is what I'm looking at on psnprofiles

date related trophies don't seem to be glitchable
I must have tried to glitch the documentary trophy 15 times now and nothing

Probably pinging the server and not your console.