These kind people just take advantage of you

You don't have to disclose your pay. In the past I did same thing but later I realized those people who asked me didn't tell me their real pay, they just took advantage of my information for themselves. So, don't discuss that with him. Secondly, don't get too close with people who enjoy gossiping and peeking others' privacy. Usually those people like to spread rumor and gossip about you too.