My first experiences were memorable, but ended after our friend moved away. Have you ever discovered another SAFE friend that had the same feelings?
I met my first friend on Adult Friend Finder, but like your friend my moved also. I'm on Adam4Adam, but haven't had much luck there. I haven't found a good way to meet other guys locally and am curious to hear from others.
I met with a guy I met on Silverdaddies for a couple of years. No matter the forum for meeting guys its still tough finding a match. Ive never been able to find someone spontaneously.
One may be more obvious than you think. My fwb is someone I've known for over 40 years. Never did he nor I ever expect either of us to becoming bisexual. Small things lead to other things between us.