[Malleys]

<p id="block"></p>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
var girls = ["Маша", "Даша", "Ксюша", "Катя"];
var actions = ['любит', 'не любит', 'уважает', 'видит'];
var boys = ["Мишу", "Пашу", "Диму", "Федю"];

setInterval(function(){
        $("#block").fadeOut(400, function() {
            var girl = girls[Math.floor(Math.random() * girls.length)];
            var act = actions[Math.floor(Math.random() * actions.length)];
            var boy = boys[Math.floor(Math.random() * boys.length)];
            $("#block").text("Девочка " + girl + " " + act + " мальчика " + boy).fadeIn(500);
        });
}, 4000);
</script>