Potamus......if over a good, sustainable period of time the bad outweighs the good....probably time to move on. Just take your time. Also....think seriously about what your life would be like without him on a daily basis.
Jen...as you know I'm all for one night stands, but guys always seem to want more ugh! Hope it won't be too awkward letting the neighbor down. My rule of thumb....don't sleep with anyone who lives on your block.