I have been in a relationship with an old high school sweetheart for the past 6 months. It has been a wonderful time in my life. I have fallen in love with this girl. Saturday night we went to a bar to meet a friend of mine for a couple of drinks before going to a movie. As soon as he came in she started kissing him on the lips right in front of me, like it was no big deal. After awhile my friend got up to go to the restroom and I asked her to knock it off. When he came back she informed him that she was not allowed to kiss him anymore. Then she started doing it again. As I watched in disbelief, she stuck her tongue out but thankfully my friend kept his lips closed tight. She must have kissed him 25 times in a 1 hour period. I took her straight home. The only reason she can give me is that she was drinking wine on an empty stomach. She only has 3 glasses. My friend tells me to send her down the road. But the last 6 months have been wonderful. I need some good advice.