(Keeping aside MJ - Maya story which is not revealed so far)
MJ wanted to tell Rudra that his girlfriend is after his money only. When Rudra saw them together, the girl was willingly in arms of MJ. She started her drama after seeing Rudra catching them in elevator. MJ proved his point right. The girl surely did not love Rudra.
MJ wanted to tell Rishi that his girlfriend does not love her but has some other intentions. After Rishi's death, MJ is sure the girl has some other plans. Again, MJ is right.
Besides MJ - Maya's unrevealed story, MJ does not seem to be wrong so far.