Don't you just hate it when you're talking to someone, and their the one's who started the convo but they take ages to reply and eventually just leave you hanging?

This is happening to me right now, and this person always does this, like everytime we talk. Why engage a conversation at the first place if you're not even gonna bother to reply? And i'm the stupid person here who always replies even tho i know that there is always that 99.9% probablity that person is just gonna leave.

Gahhhh so dur annoying.

Should I confront this person and tell them how i pheel?