Question

WHICH LINE SHOULD I USE IN THE END OF THE INFORMAL LETTER

Answer 1

Here's your answer :

You can write "yours lovingly " in the end of the informal letters.

Hope this helps you. .
THANK YOU. .

Answer 2

If it's to a friend, you could sign off as Yours affectionately. If it's to a close member of the family, you could sign off as Yours lovingly.

                              OR

I can't wait to hear from you.

I am looking forward to seeing you again.

See you soon.

Let me know what your plans are.

I hope to be hearing from you soon.

Send my love to __________.

Give my regards to __________.

I hope you are doing well!

With affection (With all my love, or With love and kisses).