The beginning of a relationship is often the hardest. This is when you are getting to know each other and figuring out your compatibility. There can be a lot of pressure to make things work, and if things don't go smoothly it can be easy to give up.
The middle of a relationship can also be tough. This is when the initial excitement starts to wear off and you may start to take each other for granted. It's important to keep things fresh and exciting during this time, or else the relationship may start to fizzle out.
The end of a relationship is obviously the hardest part. This is when all the built-up resentment and hurt feelings come to a head, and it can be very difficult to overcome them. If you're not careful, this can lead to a nasty breakup that leaves both parties feeling bitter and resentful.