They're friends ! They met through a child protection seminar due to being seated in the accessible space together and since they hit off pretty well they got some drinks at Ange's place which turned into more but didn't go very far in the end. Viorel still scored another person he could confide in besides Eli and Ange got to make out (and some more ;) ) with a cute boy so a win nonetheless.
This took place before Ange met Ismaele and Viorel crossed path again with Abel btw !