I think today was a build up to the big hurt shiva is gonna feel and push raavi away. See even when he drank coz he was just feeling down about that snehas words that in past wouldn't have mattered but now with his feelings for raavi and also it was said by her close friend who knows her it made him upset. He seemed resigned to the fact raavi was unattainable to him in the room scene but then the big diary revelation came. This has to sting him further thinking raavi had feelings for Dev and brings about all the complex issues between him and raavi and also his sometimes adverserial relationship with Dev. Now raavi and him will have a confrontation and he will tell her it's over. The ball is in raavis court now and how she wants to handle this.