Take any new R slowly. But commit to the new R, even though it's slowly. If you are half in and half out, and ready to bolt just because something "better" comes along, that is simply not fair to your new R, nor to yourself, and actually not even to the "something better".
Honestly, that's probably one of the biggest problems that causes D... aside from M, that is...
"I'm really into you... unless a better option comes along... oh, there she is now, my ex or some supermodel"
