if(evt.getKey() == Key.LeftArrow){
                if(player.hasAttribute("mateselect")){
                    Npc[] npcs = (Npc[])player.getAttribute("npcs");
                    int currentnpc = (Integer)player.getAttribute("currentnpc");
                    currentnpc--;
                    if(currentnpc==-1){
                        currentnpc=npcs.length-1;
                        Npc npc = (Npc)npcs[currentnpc];
                        updateheartposition(player, npc);
                        player.setAttribute("currentnpc", currentnpc);
                        return;
                    }if(currentnpc>=0){
                        Npc npc = (Npc)npcs[currentnpc];
                        updateheartposition(player, npc);
                        player.setAttribute("currentnpc", currentnpc);
                    }
                }
            }if(evt.getKey() == Key.RightArrow){
                if(player.hasAttribute("mateselect")){
                    Npc[] npcs = (Npc[])player.getAttribute("npcs");
                    int currentnpc = (Integer)player.getAttribute("currentnpc");
                    currentnpc++;
                    if(currentnpc==npcs.length){
                        currentnpc=0;
                        Npc npc = (Npc)npcs[currentnpc];
                        updateheartposition(player, npc);
                        player.setAttribute("currentnpc", currentnpc);
                    }if(currentnpc<=npcs.length-1){
                        Npc npc = (Npc)npcs[currentnpc];
                        updateheartposition(player, npc);
                        player.setAttribute("currentnpc", currentnpc);
                    }
                }
            }