Seriously, even though I had never ever impose that kind of thingy,
but then its just me (vampire are different from mortal).
Seriously, it's all about the old question of trust.
Trust and fear never go hand-in-hand. If you fear to lose your
love, your trust level slip drastically, vice vista. And of course,
if your bf is a Leo, chances are, he will be pretty annoyed by the
restriction of freedom and choice.
I mentioned it a million times and would continue to mention: IF
your LOVE desire to leave the relationship, it DOESN'T need
situations like these to happen (a third-party, etc) in order for
him to leave. If he wants to go, he will go regardless of reasons.
Willingness is a
product of love - the absence of it will encourage
separation. This is the same thing with headhunter - they will
definitely fail to recruit the people, whom are terribly loyal to
their current company. Money is NOT exactly the point - welfare
is.
If your love is insufficient for him to remain, then it is back to
the ultimate classic question: what's the use of retaining a man
who doesn't cherish your love?
Trust never hurts. Only deception does. 
Cheers