It's been イディオム
it's been a slice (of life)
it has been an experience, it has been interesting "On the last day of work, Pam said, ""It's been a slice, Mag."""
It's been real
it's been fun, nice
it's been ---, it's been real|real
informal Shortened form for "it has been real nice (being with you)"

used colloquially between very close friends.
It's been.
Inf. a byword said on abrogation a affair or added gathering. (A abridgement of It's been admirable or some agnate expression.) Mary: Well, it's been. We absolutely accept to go, though. Andy: So animated you could appear over. Bye. Fred: Bye, you guys. See you. Sally: It's been. Absolutely it has. Toodle-oo.Learn more: been