My boyfriend's friend (call him Bill) has been pressuring him to kiss me. We had not kissed previously, but my boyfriend told Bill that we had done it about two weeks ago and have have been casually kissing ever since. Today in public, my boyfriend gave me a quick peck on the lips in response to some pressure from Bill a few minutes before. Now I feel like my first kiss has been ruined. Should I be angry about it or am I overreacting? (This is the first kiss I've ever had.)