There's a song called That's My Hoe 2 by a rapper named Future with those lyrics. Maybe he was just feeling the lyrics and tweeted them, Chris probably took that as a jab and replied with an lol.
Aslo Vybz Kartel has a song called Get Gyal Easy...
Drizzy is probably just listening to music and yall blowing it outta proportion
Edit: Drake just tweeted "Free Kartel!", think I just proved my point....
It's painfully obvious that Drake didn't get any from Rihanna and he's upset. He's been following her around, talking about her, and practically living by her for 2 years now and she still hasn't given him the time of day, so he makes jabs at her in songs and on Twitter. Such transparency.