Did you see the newest transformers? How was Megan Fox's character absence explained?

I was shocked when i found out Megan Fox wasn't going to be in the newest Transformers, earlier this year. I thought the movie was going to be a total flop this summer with out her. Yet all i've heard is great things and people seem to really like it. I just haven't had the chance to see it so i was curious how is Megan Fox's character Mikaela absence explained? Did they break up? Is she dead? Or why does Sam have a new girlfriend or whatever. Thanks! :)Did you see the newest transformers? How was Megan Fox's character absence explained?One of the little autobots at the beginning of the movie conclude that Mikaela dumped Sam .

... Also , later on in the movie it shows Sam getting an award from Obama which is when he meets the new girl .Did you see the newest transformers? How was Megan Fox's character absence explained?her absence is explained by Sam breaking up with her. and the new actress made the movie much better. either ways the third part is by far the best out of the three and Linkin Park's theme only makes it better. its very interesting and sometimes sad. i enjoyed it and i would really recommend you seeing it as soon as possible. you'll forget Megan Fox even existed!Did you see the newest transformers? How was Megan Fox's character absence explained?In the movie, Sam says that Mikaela broke up with him. He meets the new girl at The White House when Obama is giving him a medal for his bravery. And yeah the movie is great! And the new girl is better and cuter! (I'm a dude, so shoot me for liking the new girl) lolDid you see the newest transformers? How was Megan Fox's character absence explained?
Sam moved to Chicago so he broke up with Mikaela.