I agree with you buff. I liked Purab a lot in the beginning but the way he behaved is not what was supposed to be. He just left Jassi writing a letter which forced Jassi to go back to Armaan. Any girl would be broken completly after reading that letter and then he never gave excuse for that also and then again as you said, he was having brain tumur and still he wanted to marry Jassi..... Is this his luv. He also behaved like Moli only but in a refined way