Is it a marriage?

I'm confused a little: how does Aryan filling Aru's maang constitutes to be a marriage? I don't think it should be. Someone clarify for me please.

Practically and realistically speaking it isn't a marriage. Aru is every bit right in opposing it.

First i thought it ws the devdasi thing but tulsi clearly meant aara r married coz she rather have aara married even this way then anything else where aaru is vulnerable like she was today. I dont think kumu would be giving her the bead from her mangalsutran blessing her like she did with gayu as well and her praying in the precap tht aaru does the Dil rituals which she will accidentaly tom if this was devdasi then she would have taken her to the temple talked to the priests etc n told rao the truth about the switch. She is planning something big using the mohra aaru n aryan

Ya even I thought that maybe they will say that Aradhya is Krishnadasi now but after seeing Tulsi's reaction it looks like ArRa's marriage and I don't think so they gonna show Aradhya as Devdasi bcz this show is to stop all such rituals and the third generation will do this. So don't worry