Are all gurls like thiss?

so my gf and i hav ben 2gether for almost 3 months. she constantly constantly jokes about breaking up with me and about loving her exes and sends me pictures of her looking intimate with other guys and it drives me up the wall! weve both alredy said we love eachother. i am pretty jealous type so i dont know..do all you gurls do dis with your boyfriends? or is this not normal?