You can keep in touch with an ex depending on the circumstances that led to the breakup. If the issue was life-threatening and you had to run for your life, there’s no need to still keep in touch. But if it was something you both decided to do then you can keep in touch but at a distance.
BE THE CHANGE YOU WANT TO SEE IN THE WORLD
Also, the cause of the breakup sometimes matters.
If you did something so extreme to hurt or break the person’s heart, it is better to let sleeping dogs lie.
You must keep in mind that an ex is an ex, past, gone and should be forgotten.
If your ex is a threat to your relationship, cut him or her off completely.
Most of the time, some people find it very difficult to let go of an ex, so they keep lingering around which often sabotages the new relationship. Forget the past, and focus on the new.
If an ex still wants to get closer to you knowing perfectly you are in a relationship, then it’s a big NO. He might ruin your relationship.
If you’re not seeing anyone and s/he comes around that’s different but if you’re in a relationship, it’s better you put him or her where they belong and save your relationship.
Love him or her at a distance, don’t hate him or her.
This is because you guys were once in love and fell out of it for one reason or the other. So if you meet up or get close again the chemistry will start working. Its a feeling that’s always there so it will just bounce back into focus.
That’s when you begin to make comparisons with your new partner.
The fact that someone is your Ex doesn’t mean they are your enemy. Love him or her at a distance, don’t hate him or her.
It takes a greater sense of maturity and self-control to be able to have a normal conversation in spite of everything that happened in the past.
Note: If your ex is a threat to your relationship, cut him or her off completely. But on a normal, you should just be on a hi-hello level with your ex.