<human>: Can you provide a brief rundown of the text in within 3 sentences?

So, I use Twitter a lot, and I talk to several people there, most of the time I talk in public or private messages if the conversation is too long or if it is about something more private, of course, I always tell my SO because I have nothing to hide from him. 

This past few days, I reconnected with an acquaintance there. He politely asked me if we could chat, and me, being the stupid friendly person that I am, told him that of course, but because I have I have a weird schedule sometimes I wouldn't be able to reply fast. 

After that, the guy asked me for my phone number, because that way would be more comfortable and better for him... and I didn't like that. I don't know it it was a hint or what, but after having a stalker for 3 years, I don't want to give my personal phone number to a guy that I barely know. 

I talked to my boyfriend but he has no clue on what could I say to this guy, because if it were for him, he would just ignore him completely, but to me that's not polite. 

So, what do you think I should do? I am clueless. I want to tell him no without sounding like a bitch.
<bot>: Guy wants my phone number, I don't want to give it to him, but I also don't want to be unpolite.