One of the verses from the Bhagavad Gita that is often related to love, particularly in the sense of devotion and surrender, is:

Chapter 9, Verse 22 (9.22):

अनन्याश्चिन्तयन्तो मां ये जनाः पर्युपासते | तेषां नित्याभियुक्तानां योगक्षेमं वहाम्यहम् ||

Transliteration: ananyāś cintayanto māṁ ye janāḥ paryupāsate teṣāṁ nityābhiyuktānāṁ yoga-kṣemaṁ vahāmy aham

Translation: To those who are constantly devoted and who worship Me with love, I carry what they lack and preserve what they have.

Meaning: In this verse, Lord Krishna emphasizes the power of unwavering devotion and love towards Him. He assures that for those who are constantly absorbed in His thoughts and worship Him with an undivided heart, He takes personal responsibility for their welfare. He provides for their needs (Yoga) and protects their possessions (Kshema). This verse highlights the importance of single-minded devotion and the assurance of divine support and care in return.