Be clear with yourself whether or not you want to maintain a friendship with your ex. It's important to put your needs first in this situation. Relationship breakups come with many emotional challenges, as both parties are left to cope with diminished hopes and expectations for the failed relationship, note health professionals at Help Guide, an online mental health resource. While your ex may be excited about maintaining a friendship, you may find that this doesn't serve your best interests.

Complete your healing process. Before you think about whether or not to befriend your ex, it's important that you take the time to heal from your failed relationship. Elliott says that couples who break up and then attempt a friendship before they've healed often create complicated and emotionally unstable situations. If you or your ex finds a new mate -- and either one of you still has feelings for the other and has not fully accepted that your romantic relationship is over -- then anger, jealousy and resentment could emerge in your friendship.

Be honest and clear with your ex. If you decide that you don't want to be friends, let him know with clear, honest and direct communication. If your answer is no, then simply say "no" -- there is no need to explain or justify your answer. At this point you should stop further communications with him via phone, email and text as well. If you decide that a friendship is an emotionally healthy and worthwhile option, then set clear parameters for your friendship -- such as no late night sleepovers -- so that your ex knows what to expect.