Michelle Rodriquez & Cara Delevingne -- Sign of a Break Up ... Mouth Lock with Other Model Chick

Two Victoria’s Secret’s models -- Cara Delevingne and Karlie Kloss -- kissing is normally something we'd applaud. So, we will ... but this also raises a question.

Since we thought Michelle Rodriguez and Cara were a thing -- this seems like a good time to ask M-Rod about her dating habits ... and to further investigate Cara and Karlie's liplock.