What are the three things relationship should have?

Trust, love, respect. Simple recipe.

Love, trust, comunication without these things it just wouldnt work.

I am not a guy, but I am married to one and I am not certain that you ment "guys" in a literal sence. I am thinking that 3 things would be....One a good sence of humor. Two, a good heart and finally a level of attractiveness to the individual.

1) Faith - in God and in each other 2) Unconditional love 3) Honesty

I would say that the 3 must haves of a good relationship are Love, Respect and Trust. With these three present, everything else follows. If you respect the person you are with, you will always be loyal to him/her. Also, respecting would imply acceptance of individual differences. Then theres trust, when you trust your partner & he trust you back, then there's no keeping secrets, no poisonous jealousy ( a healthy dose is ok =))...and of course, there should always be LOVE. Love will help both of you endure everything. Love will keep you together when the attraction and the excitement fades....

openness, loyalty and trust but if I could go on I would also say communication

The biggest thing would be trust. Without trust you cannot have a lasting relationship. Another important thing would be communication. If you do not communicate, then there is no way the relationship will last or grow. It is also important to have common goals and interests so that you have something to work toward together and to share.

Friendship it's a strong foundation in a relationship. Especially when you started as friends by that you already accepted everything even her faults,what she is,and mistakes and being her it's vice versa. Trust 100% if you have doubts it wont work. Trust is very important in a realtionship even your near or far. Respect each other for what she is and what I am. Respect that counts a lot the individuality of each other. Not pulling each other down. Respecting each other opinions and ideas and being you. Have a nice day!

to build a great foundation for the future, there needs to be: communication, honesty and respect. simple as that. except sometimes it's not so simple.