Self acceptance through romantic love
Romantic relations let you feel a level of intimacy which you can't from platonic relations.
The intimacy that I am talking about is not the physical one; rather it is the bond that you share with your partner.
They don't bat an eye on your imperfections, be it physical or mental. They look at you as if you are the most beautiful person they have ever laid their eyes on. You can see the love for you in their eyes, they sparkle with happiness because they are with you. They cherish every bit of you and thank the heavens that they found you. They kiss away your fears and scars with their words, and their actions amplify the effect. Through all this they slowly heal parts of you that used to break you. They help you see that you are a beautiful person despite the imperfections that you may have and their love helps you believe it. You start accepting those scars of yourself, even the pronounced ones. You begin to bloom, your light shining brighter than ever.
And then the magic happens, you start falling in love with yourself.