Few months ago one of my classmate (online course thingy) text me personally to ask about serious matter.  It was just normal chat once a while.
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After 1 month, he suddenly addresses me Lenglui, and started other topics but I consider it as casual chat, we often exchange lunch photos, etc.. Few times he would ask whether got miss him or not? I avoided these kind of questions most time. I found his profile in facebook and happened to know he's married with a son somemore. He's younger than me 4 years but he lied about his age, and status too. Guess that's common.
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We talked in phone before for like only 1 minute, and video call for 2 minutes.
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He will share to me many info and case studies related to our field of studies.. Helped in my academic somehow...but he seems got other intention behind the sharing.

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Lately he suddenly likes to bring up xxx topics. Well, I'm ok with it, just formal discussion.. I don't care if that makes him horny, afterall just over the phone.
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We often chat till midnight.. I'm really wondering, married guy staying under same roof with wife, how is he able to chit chat with other girl whole night long?  I am just guessing from the wife's Facebook that they are still together because there are still recent family photos posted..
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We are unable to meet, probably never. Too far apart. Different states. 

We don't even have each others contact numbers.  Chatting via Wechat with hidden profile somemore.

Why say so?

Hi my Ex Boyfriend. How have you been doing? Jealous huh?

Because I busy with this married man...