「恋愛」は、だれかを好きになって、その人と特別な気持ちを持つことです。

"恋愛" means to like someone and have special feelings for that person.

ドラマや歌でよく使われて、友だちとの話にもよく出てきます。

It is often used in dramas and songs, and also comes up frequently in conversations with friends.