The greatest weakness in any relationship is not having communication. communicating about everything and anything that bothers you is very important. And when communicating, it is highly important to be open-minded with your partner. many people tend to close off their mind and don't really absorb what their partner is saying-- which can self sabotage you. Even if it takes a while, yu want to really absorb and understand your partners feelings. Another important thing is to not be self absorbant in relationships, you have t remember there is two people in a relationship, not just you and the person who loves you!!! for example, if your partner doesn't reply for a day, you cant and shouldn't get mad at them. You can be sad and miss them, but its not their fault , thy might've needed time alone or was busy. And if they act different, just be patient. The best thing in a relationship is when they care enough to not break-up with you or get mad at you over small things, and it goes both ways