Their past 4

He put a hole on the pot he was carrying, and water started pouring out threatening to extinguish the already lit fire while he started circling it. 

Aarav was doings things which are usually done while performing last rights of dead in place of marriage rituals.  

context here, In Hindu religion fire is considered holy, and it is believed that what ever offering one makes to god reaches him through the medium called fire, so most of the rituals have one thing or the other related to fire and in marriage this fire symbolizes gods are witnessing and blessing your marriage, so extinguishing it is the worst sin one could do)

Priest seeing this scene started shouting "What are you doing, someone stop him this will anger the gods" 

His call made people from Arundathi's family and her act, they all went to Aarav trying to stop him from committing a grave sin but were pushed away.

After completing the circles he turned to Arundathi and smiling at her, he passed his signature kiss.

With that he threw the pot from his hands extinguishing the fire completely and said "I am breaking this marriage" 

Arundathi grabbed his hand and said in pleading tone,"Aarav why are you doing this, this is not the Aarav I know are you angry with me did I do something wrong"

Listening to her pleading tone all the on lookers felt pity, but his evil smile only grew wider he pushed her away and said "I think you didn't hear it properly I Aarav Trivedi, am breaking off this marriage from this day onwards Arundhati and Aarav won't have anything to with each other"

Leaving the shocked audience, he went to his car and started it while Arundhati all the way pleaded him not to leave and even started running after his car but when she couldn't, she fell on her knees crying desperately.

"Aru, Aru stabilize yourself, I will talk to Mr. Kailashnath, and believe me I will sort this out"

Vijay came rushing to his daughter and helped her up, offering words to comfort her.

Arundhati's condition was worse than ever despair filled eyes, but people despite seeing the whole scenario, started gossiping about her and media personal started bombarding her with questions,

"Miss Arundhati were you marryingAarav for his name?"

"Miss Arundathiisittrue that you cheated on him?"

"Miss Arundhati say something "

previously people didn't dare touch her because of the backing of the TRIVEDIS, the most influential family but now that wasn't the case any more Aarav's declaration was a chance they could never miss, a chance to be on the same side as Trivedis and all they had to do was to pass the blame on Arundathi and clear Aarav's name.

Arundhati's parents got her home, and leaving her there they drove off to Aarav's home.

Aarav's home, Trivedi mansion

Everyone in the mansion were asleep except one Madhuri Trivedi(Kailashnath's sister), she was on her phone checking out the Live news.

"Oh my, Aarav that was a great move, you fooled everyone including me, I have to say your acting skills sure are top-notch I was genuinely shocked to see the changes you showed, it can be just for a second, but you really made me doubt my capabilities of training your mind and this girl Arundathi is the first one to make me nervous, for the first time in my life I developed a sense urgency if everything went smoothly she could have restored the dented relationship between both father and son and if that had happened my years of planning would have been doomed, so I choose to kill her.

I made my people infiltrate her house and poison the 'Holy water' I was sure she would die without causing me any problems, but she survived no issues and also your relationship with her is broken there is no need for me to kill her, lucky for you Aarav she survived my plans only to fall into your clutches but why Aarav? Why did you choose this?, what did she do provoke your ire?"

"You should have informed me I would have helped you my little Aarav, adding sleeping pills to drinks offered to every guest present in the house must have been hard"

'Aarav must be back by now I should also pretend to be asleep I bet we will get to see a big show'

After a while,

Kailashnath and other Trivedis were awoken by now and their eyes were all filled with confusion, they had to attend their son's wedding but how come were they sleeping this late, Kailashnath was the first to realize and said, "Everyone move make it quick, Arundhati's family must be waiting for us, we should go there quickly, call Aarav where is he"

Just when he finished his sentence all heard the sound of gate opening and car entering.

Aarav entered the hall in his groom attire, seeing this kailashnath said, "Aarav where have been this whole time, let's talk about it later we have to go for now Arundhati must be waiting for you"

Aarav's lips curved into a mischievous smile as he said "Mr. Kailashnath you don't have to worry about that I went to the Iyer's and informed my decision of breaking off the marriage