What does it mean if you dream you kissed a girl when your straight?

These dreams are probably not indicating that you're a lesbian because your reactions were to feel weird and shocked by this behavior, and you are happy in your relationship with your boyfriend. So, the kisses may be symbolic in your dreams. They may be indicating that your relationships with your friend and colleagues are getting stronger. Maybe you have more favor in your work environment and are growing in close, caring relationships with these people. Also, this behavior in your dream could indicate influences in your life, whether they are people, music, TV, movies, or other influences that demonstrate this behavior.

No, but it's telling you something. Maybe that you're a little bit curious?

No, you're not a lesbian but I think this may be a way your subconscious mind is telling you to either jazz up this five year old relationship with this man or find another lover. Maybe you could widen your interests or people you know in other types of reationships, such as hobbies, classes, charity activities, etc.  

I don’t think your a lesbian - I think the dream is telling you that somebody requires your pity and care and you need to nourish and acknowledge your desires and not try to conceal or hide them - not romantic desires but possibly desires for social Justice or for better treatment from your contacts or for a different work or family or school situation