People stay in bad relationships because they are terrified of not being loved outside of it. They feel that no one else would love them if they leave. But the truth is the feeling of lovability cannot come from another person; it has to come from within.
If you are struggling with the relationship, or you have been searching for love for ages, it is very likely that your belief system around what you deserve could be the issue. Take the focus off your relationship and focus on yourself, be happy with yourself, loving yourself, praising yourself, and follow advice in other sections of this book, you might just find that your relationships instantly improve.