It's never too late to get your ex back though you'll need to prepare yourself for a fight (no, not a physical one) but mentally.
You would need to assess the situation and go ahead with some of the enticing tricks to lure them back.
Assess your feelings and what you need to do The first thing to do is to assess your feelings and whether the break up was due to petty reasons or major issues best left unrigged.
If you feel the cause was petty and you still want your ex back then it's never too late to work things out.
Find out if your ex still loves you This critical issue needs attention, because if your ex is no longer interested in you then what is the point trying to lure them back? You could find out through friends as to what your ex's feelings would be and whether they'd want to come back.
Give your ex as much space as they need It's best to give your ex all the space and time they need to sort out their feelings as well as come to conclusions whether you are the person they want to be with or they'd prefer to go along with the new person they're seeing currently.
Keep contact minimum Do not completely cut off all contact but keep to the minimum so you don't seem to be pestering or bothering your ex or sounding desperate.
While you maintain distance, show your concern and care, so it shows that avenues are open.
Show your appreciation May be you never realized their worth and appreciated them for the person they are and kept finding fault with them.
It's never too late to appreciate a person and accept them as they are if you really are keen to get your ex back.
The time is right to express yourself After your ex has had all the time and space needed to ponder over the relationship they walked out of, it would be well to express deeper sentiments.
Mention that your life is vacant without the person you love so much and wish you had a second chance.
Dare to ask If you know for sure that your ex is still single or not serious about their current dates then dare to ask them if they'd like to give you a second chance.
Tell them that you could talk things over to rebuild a happier relationship together, and that it's not too late.