Dear Diana,
I have been with this girl for the past seven months. My close buddy also often hangs out with us. There is nothing that I hide from my friend. But, of late, my friend has been behaving strange. It appears that he has fallen for my girl. The first hint was that whenever we decided to meet, my pal and she would always be there much before I arrived at the decided venue. This was not the scene earlier as my girl is a habitual latecomer. Three weeks ago, one of my other pals saw the two together at a coffee shop at a mall in Malad. I immediately called her and asked her whereabouts, she said she was at home. It was a blatant lie. I then dialled my pal's number and he said he was out with his family. The two are having an affair, but I do not know how to accost them. I need to catch them redhanded. What should I do? Should I confront them? Or just dump her?
— Vrajesh

Illustration/Uday Mohite