As for him being spineless - well if Armaan was spineless then Purab Mahatma had a noodle for a spine. Who left Jassi not once but twice???????? He didn't even have the guts to tell Jassi on her face that he was leaving her!!! and then he has the audacity to say that Armaan doesn't deserve her???????? It was Armaan who was there for Jassi when that Mahatma left Jassi at the altar so to speak.
As for the fiasco with PC - we all know that Armaan was very possessive of Jassi - we have just seen it in the Octaviour episodes. So it is natural for a possessive jealous lover like him to see green everywhere when he sees his fiancee sharing a bed in a hotel room with another man, that too a man he cannot stand? I would have freaked out if I had seen my fiancee like that!!! And he was willing to beleive whatever Jassi told him - but instead of giving him a straightforward answer Madam beats about the bush and then runs away. If she had nothing to hide, if she had not done anything wrong, then why didn't she give him a proper answer????
I agree, love is based on trust. But sometimes things happen that can arouse one's suspicions and it is upto the other person to remove those doubts. Armaan was only human after all!!! ๐ณ