You have joy when you could love a person deeply and unconditionally without struggle. It just flows from within and the best part is knowing that the person truly loves you in return.
He might not be all perfect but he is right for you, an imperfect person becomes a right and perfect person when in love with each other . Real and True love in God through Christ is what makes you love unconditionally without restrain and also help you love appropriately and perfectly.
Trust God to Love your partner the way God want you to Love him. Surely, that is the best way to Love.