Did Shahid ignored Saif's Invitation because of Kareena Kapoor ?

Bollywood actor Saif Ali Khan and his Wife Kareena Kapoor Khan kept a huge party, but Shahid Kapoor and his wife Mira Rajput did not turn up, despite of getting invitation. Like Shahid has ignored the invitation of Shahid Kapoor, Gossip has started in Bollywood. Why did Shahid not accepted the invitation, whereas whole team of Rangoon was present there. Celebs like Shahrukh khan, Sonam kapoor, Ranbir Kapoor, Kangana Ranaut were also present there. According to report, 'Said messaged Shahid and invited him with his wife Mira. This is been guessed that, Shahid and Mira did not come to the party because of both of them wanted to spend time together. Speculations are that, Mira is Pregannt, that's why they did not come. But the biggest angle is, Shahid did not wnated to attent the party with his wife infront of his Ex ?