Need advice!

Lisa • I`m 35 years old, I currently live in Lapine Oregon with my family. I have a wonderful husband and 2 amazing baby boys. I`m a sweet person, funny, kind and loving. I like to laugh.
I'm getting to know this guy that my sister and her boyfriend introduced me too and I'm wondering why he can talk my ear off over the phone but when we all hang out he's so quiet towards me. Has this happened to anyone else before?