You’re correct. I don’t know you nor your brother. But I know that men and women have very different moral codes that they have to abide by. Whereas fingers would be pointed at a girl if she decides to socialize, no one would bat an eyelash if the guy decides to do the same, or even more. And every single guy in this world, whether he be from Pakistan or Timbuktu behaves himself when a female is around him, whether he’s related to her or not. So you’re definitely not special in that regard
Living up to standard set of morals isn’t as hard as people set them out to be. It’s quiet basic. And not everyone is a special snowflake in this world. But to judge someone on the basis of a regular social visit is extremely pathetic. If a potential rishta seeker has that much of a concern whether the girl has feelings for a colleague or not, then ask her point blank, instead of questioning her character and as they say, avoid mitti uchalna on someone else’s character.