So I recently added this girl I had a college class with this summer and I messaged her. I was doing good I think but now I'm stuck on what to say.

Me: Hey, I don't know If I know you but you look really familiar. Did you take a Bio class at ***** this summer?
Her: Lol yes I did.
Me : Lol ok I thought so. I don't know if you remember me , although I think I was the only black guy in the class lol
Her: Hahah yea that makes it a lot easier lol I remember

Im really stuck and don't know where to go from here. Any advice. Im a beginner with this lol