Which one is you? 外冷内热？外热内冷？不冷不热？忽冷忽热？

It's more of a personality thing

外冷内热: cold on the outside, but warm on the inside
外热内冷: warm on the outside, but cold on the inside
不冷不热: not cold, also not warm
忽冷忽热: the minute cold, the next minute warm, and repeat

PS: Nothing serious, just for fun