Never beg for love.
Never beg for romance.
Never beg for attention.
Never beg for affection.
Never beg for respect.
Never beg for reciprocity.
Never beg for compliments.
Never beg for quality time.
Never beg for intimacy.
Never beg for commitment.
Never beg for loyalty.
The biggest rule in a relationship is that no matter how mad you are at your partner, you do not go and seek someone else's attention. You stay there and make it right. Because that's your person. If you can easily go to someone else, you do not love the person you are with.