i can assure you friends work. i know two in san diego i couldn't get going if i OD-ed on Viagra. They're good for conversion, and I'm cool with that. They don't seem to be but that's how the cookie crumbles. 
Yeah, and of course there are those chicks who you are just cool with. But, for those who are just bangin females and they have "a lot of male friends", those dudes are waiting for the right time. And since Rob is friends with Kamali, and Rob was/is a DJ up in NYC...
I a guarantee he was waiting for the right time. Because Alti got a body on her, seems amped up a lot...eve though she looked her best 7 yrs ago.