Need some puppy advice help!?

Okay so I have my 9 week old pitty Shorty.. He has had his first shot and the Bordetella and dewormed.. My girlfriend just got a 7 week old Chocolate lab puppy that just got his first shot today and dewormed and im just curious if it would be safe for them to play together? Im asking cause i dont want to do it without any knowledge if it is safe or not and what the risk would be.. Anyways some info would be great thank you!