Does your agreement with him include the expectation of updating him should things change as you become aware of it?
- "I can no longer meet the original agreement of no fond feelings at all. I have developed fond feelings for you. I still do not expect any long term committment. Just keeping you in the loop."
Or does your agreement with him include the expectation of withholding any/all emotional information about things that could concern him? (ie: his relationship with you)
What agreements do you keep with yourself in your relationshipping? So you can stay true to you?
Just food for thought. You will choose what you feel is best for you.
Me? I don't think there's anything wrong in telling a FWB -- "I enjoy spending time with you and I enjoy being around you. I like you."