Heres another psyche of such fellas.
They think you are alone, needing him and can spend lots of
'quality' time with him.
So the moment you appear to have lots of friends that shares your
interests, goes out with them a lot, and frankly does not have time
for him or frankly cannot gel with him.
There will be times where he will whine and demand you to spend
quality time alone with him instead.
You only need to refuse and tells him.....'Either this, or you can
forget it. You holding me back, without contributing significantly
to my well being....is wasting both our time.'