What type of kiss conveys the most love?

YOu see, its my girlfriends birthday, its the first birthday we have shared as being together. What type of kiss conveys the most love? We have been together for 9 months and 11 days, and only had our first kiss a few weeks back, but at first we kissed, then it progressed to full on making out, with her on top of me, we kissed for 45 mn at a time, so i know she is comfortable with ay type of kiss.