I Love Cats

My cat meows and meows to be let out
Then he wants to come back in and meows and meows to be let back in?
He is fed and watered and he goes out every hour
But lately he is meowing and trying to tell me something like he's trying to talk.
I let him out and he meows outside like he is meowing at something
Then shortly after he is meowing to be let back in.
Wtf