Why would a guy talk to me daily and specifically ask if my friend is single?

So i've been talking to this guy i met on an app for over 3 months, almost daily. He views my stories so he's seen my friends. Recently, i said something to trigger him to playfully ask me to volunteer myself as a girlfriend candidate for him, or to volunteer one of my friends.
i was flattered by the first statement, but upset with the second.
anyway, he searched for a picture of one of my friends and asked me if she's available.

i'm not asking if what he did was right, or if me feeling upset is justified.
i'm just wondering why would he talk to me daily if he was interested in my friend and not me?
and if he was actually interested in me, wouldn't it be careless to ask about my friend so outrightly?

Why would a guy talk to me daily and specifically ask if my friend is single?
Post Opinion