How to not sound like a bitch?

Eli • Just a friendly person who likes helping out others!

Someone i knew from high school is being flirty and calling me cute and stuff. But i just got out of a relationship and I'm not ready to go on dates or anything yet.

He's awfully sweet and hasn't said anything about dating but i want to put a hold on his flirting without sounding like a bitch and i don't know how!