A married old man has sent me messages every day recently.

In short, he wants the old cow to eat the young grass. If you don't need anything, tell him. But if he only cares about you, he can also appropriately say, "The older you get, the better the color. Stay away from him." Don't go out for dinner with him, and don't let him know where you live, so as to avoid inviting wolves into the room.