It depends of course to whom you are writing. When I write to the family I grew up in (parents, cousins, sisters, brothers), I sign off "Love, Charles". For my wife or children, "Much love" or "Hugs and kisses" and "XOXOXO" as Shawn suggested would be fine. These would work for boyfriends/girlfriends and probably between two female friends as well but my male friends would be taken aback by such open expressions of intimacy. Between male friends, "Warmest regards", "Yours", "Later", "See ya'", etc would work better.

I will use my name (Shawn) in these examples. I am assuming you mean romantic love and not love between family members and mere friends for this. :) 1.) xoxoxo, Shawn * xoxoxo stands for "Hugs and Kisses" 2.) Hugs and Kisses, Shawn 3.) Love you, sweetie! --Shawn 4.) See you soon, honey! Shawn 5.) Snugs, Shawn * Snugs is the sound affect of cuddling with someone 6.) Talk to you later, hottie! --Shawn 7.) Can't wait to see you later tonight, Boo Bear! --Shawn * Boo Bear is just a cute nickname people use for a lover here in Western Massachusetts, USA. You can create your own too. Try it. :D