There is nothing more sweet than being with the right person and being happy in a relationship. There are some ways to know if you are truly in a happy relationship.
BOTH OF YOU SPEND QUALITY TIME TOGETHER
If you and your partner are always available for each other and tend to spend time together then you are in a happy relationship. For both of you to be spending time with each other, it means you are in love and your relationship is a healthy and happy one.

THERE ARE NO SECRETS
Another sign of a happy relationship is that there will be no secret. If you and your partner tell each other everything and you do not hide anything from him or her it means that you trust each other and this also means that your relationship is a happy and healthy one.
THERE IS TRUST
If there is strong trust between you and your partner, it is a sign that your relationship is a happy one. If you trust each other so much that you know deep down that he or she can never do anything to hurt you then your relationship is a happy one.