samartha rati | समर्था रति
A devotee sees Shri Krishna as her beloved and Shr Radha as her Ladyship. She is completely selfless and desires to serve her beloved at all times in any and every way. The thought of her own happiness doesn't even cross her mind. This kind of love is called madhurya bhava of samrtha rati (Devanagari: समर्था रति ISO15919: samarthā rati).
Illustrious example of such love are ashta mahasakhi.
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REFERENCE
Bhakti Shatak - Hundred Gems of Devotion - an in-depth analysis