silvergirl

I am married and up until 3 or 4 months ago I have had an average sex life. I have finally come to feel comfortable in my sexual skin and am enjoying a great sex life with my husband. However, I have recently picked up this vibe from my best friend (she is married too). I think she is coming on to me! She and I work out together regularly, we see each other at social functions fairly regularly and I have known her forever. I have three questions for you. How do I verify that she is thinking what I am thinking she is thinking? Would sleeping with her be considered an affair? and How do I let her know that I am interested in her without being overly obvious?