I have begun an affair with my best friends boyfriend of six years. We have known each other for the same amount of time, but only recently have started to see each other. He claims that he is ready to leave her for me. Most people, like you, are surprised that they ended up having an affair. Probably your best bet is to be honest with your friend and to get some professional help, because you need to sort through what's going on for you emotionally.
Love can be very deceptive at times.
And it's another to love somebody when all the little stuff of life is part of the relationship. Before you take any steps, even telling your friend, it would be a good idea to get help. Yes, there are different personality types, and different behavior styles. For example, people that are afraid of conflict and stuff their issues under the rug are one style. People that are scared to death of getting too close to someone else are another type.