It is a very tricky situation and I have found it has happened often with regular clients.
Hopefully we can enjoy the fact /fantasy that while in each others company we feel a form of "love" , love has many definitions and living together, marraige is certainly only one of the many possibilities.
The $ has to be set aside as less important and the clients feeling come first. A good talk, a sincere letter , explaining the boundaries of THIS relationship has usually put things back into perspective and we then have gone on to enjoy our "special evenings" together .
Indeed the brevity and intermittent quality of the client/escort relationship adds intensity and passion when set against the backdrop of normal everyday, life together, do the chores , pay the bills, kids, house, etc arrangement many clients & escorts have in their "real" life.
On occasion when this hasn't resolved the issue I have had to stop seeing the client . The client who insists that he could be "the one ", and who wants to "take you away from all this".
For many of us, the "all this" is what we enjoy, even crave. We are no different from the client who enjoys the benefits, excitement of seeing several different women. I love men, and having escorting as a part-time profession is far more often a very exciting and joyfulthing than anything I would wish to "escape " from.