If your boyfriend has cheated on you, you are most likely struggling with the fact that even though it will be difficult, ending your relationship is probably the best decision you can make for yourself. Instead of having to wonder if he will cheat on you again, or if you can trust him to remain loyal to you in the face of temptation, cutting off communication and ending your connection may give you the peace of mind you need. When saying goodbye to a cheating boyfriend, do not delay, decide on a plan, be clear with him about your decision and be prepared to stand strong regardless of his reaction.

If you have recently discovered that your boyfriend is cheating on you, it is best to end your relationship as quickly as possible. If a dating relationship goes on for a very long time, it produces strong feelings, which is why making the decision to end the relationship is best done early on, according to Dr. Neil Clark Warren, clinical psychologist and founder of eHarmony.com. If you postpone the inevitable, the emotional ties you have formed will be harder to break. Save yourself grief and sadness by being quick to end a relationship that you know is dysfunctional.

Decide exactly how you are going to end your relationship with your cheating boyfriend. A 2007 study conducted for the Universidad Complutense de Madrid in Spain suggests that people are best at making lasting changes in life after they have developed an 'if-then' plan. For example, you may decide that if your boyfriend tries to guilt you into staying in the relationship, then you will walk away to avoid being tempted by his suggestions. Planning for every possible outcome will enable you to stand strong in your decision.

Be clear with your boyfriend that you are ending your relationship because he cheated on you. While you do not have to justify your decisions, explaining that infidelity is a deal-breaker for you will help you gain closure as you let your boyfriend know that this is the end of your relationship. Do not try to make him feel better, and do not be vague with your statements. Tell him that your relationship is over, and that under no circumstances will the two of you be getting back together in the future.

Expect your boyfriend to attempt to change your mind or to act out in a strong emotional manner. According to professional-counselling.com, your partner will most likely demonstrate strong feelings when he finds out that you are ending your relationship. He may respond by crying, shouting, arguing or by making a dramatic exit. By being aware of these possibilities, you can be strong and ready for any reaction your cheating boyfriend may have to your decision.