Is ıt wrong to fallıng ın love wıth a younger man?

I have come a cross with younger man ages 25 to 32 coming and to ask me out on a date? It's hard to say or reject these man was so charming/good lookıng etc? How can I learn to stop datıng tıme wasters? My tıme ıs runnıng out cos of my age wasn't suıtable for an datıng the man of half of my age/younger man!