I've asked a couple of friends to come with us to the festival.
I hope you don't mind but I've invited two friends to the festival too.
「2人私の友達を(祭り)に誘っているよ」＝ I've invited two of my friends to the festival. / I've asked a couple of friends to come with us to the festival. / I hope you don't mind but I've invited two friends to the festival too.
「ぜひ、 あなたの友達も連れて来て」＝ Of course! Bring your friends along too! / That's fine - bring your friends!
ボキャブラリー
invite/ask ＝ 誘う
two of my friends/a couple of friends ＝ 1人の友達
festival ＝ 祭り
come with us ＝ 一緒に来る
I hope you don't mind ＝ 気にしていないといいんだけど
of course/that's fine ＝ 是非、いいよ
bring your friends ＝ 友達を連れてきて
イギリス 
