It gets a little lonely. と It's a little lonely. はどう違いますか？説明が難しい場合は、例文を教えて下さい。

"It gets a little lonely" and "It's a little lonely" are nearly identical in meaning but are slightly different.

"It gets a little lonely" means literally that it becomes a little lonely.
For example:
It gets a little lonely when you're not around.
Or
It'll get lonely if you're not around.

"It's a little lonely" simply means that you're stating a fact about the situation. It's lonely. It's already lonely. Notice that you can insert this statement into the above phrases and it still works perfectly fine!
For example
It's a little lonely when you're not around.