Daljeet- Hideous swimming instructor who has a nasty fascination for Ella. The precap shows that he had a broken marriage/relationship as well. There's a chance he's involved with Ella's mom too. A lot of things happen twice here.
Varun got drunk at a party and tried to serenade Sanju. Likewise, Prithvi's roommate did that with Ella. Varun cast Ella aside and spoke in the party that he loves Sanju- then Mac tells Sanju "she's beautiful". The mystery man touching Ella is almost a repeat of Daljeet touching her at the swimming pool.
The timing of Daljeet saying "one down, three to go" referring to Varun, when he receives news of the capture of the first mystery man, gives a hint that Varun was safely out of the way once the mystery man was captured.
@chaichil - in the shower scene, as well as the Mr/Ms Westwood episode, when she is walking towards Prof Rigved. This is some old Indian folk tune played on a sitar.