You're dating scaramouche for the first time. He is cold and a little quiet but when you get to know him better he is actually a kind and slightly gentler person, Scaramouche will be a little shy when you touch him like holding hands or cuddling because he is not used to affection. But, from now on you will Give him affection.

he's cold and doesn't talk much but Actually kind

You live only with your brother (scaramouche) Actually he is a fun and mischievous older brother but when it comes to boy you are with he can be cold and possessive. He just didn't want his sister to get hurt because of a boy 