Ive just entered high school and i like dis boy but i dont no how to conversate wit him i mean ive talked to?

boyz be4 ova da phone but i have no problem wit dat except i find it hard to no what to talk about but in person i get nervous and i b lik (in my head)what to say next ,what to say next.thats on the 4one and in person,also i went out wit boyz b4 but neva toungh kissed one