Nikki Bella says she's "so happy" John Cena has found love again ... but don't expect the old couple to break bread together with their new partners anytime soon.
As we previously reported ... Cena was spotted makin' out with his new GF, Shay Shariatzadeh, on a steamy date in Tampa over the weekend.
TMZ Sports spoke with Bella -- who's now dating dancer Artem Chigvintsev -- about her ex's new romance .... and she's showing a lot of love for Cena.
"Oh my gosh, so happy for him," Bella says.