i think the word here is chemistry? if u choose to go all the
way, chemistry is impt, no?
n since u know him as a bf n v.well, how abt him? does he know u
equally well? if not a r/s cannot just last for a long time on a
solo basis.
wif ur personal experience, didn't it tell you something of this
nature of r/s? the other word for this might be maturity (in terms
of thinking, relating to one another etc)? if he's young,
likelihood of him committing to 1 person is difficult but not
impossible.
jmo.