There are folks on here who have been through situations like those outlined - part of the reason that we allow comments on threads is for others to talk about their own experiences and opinions.
You have got that, not as an attack, but as a commentary for how such an arrangement could make a potential partner feel. What this means is that it will probably further lessen the odds that you are going to find someone that will fit your needs. Doesn't mean that what you are looking for is wrong - it just severely limits your chances of success.
You can take that on-board, as others have done who have come with similar questions, or you can pick up your toys and go home. Most definitely your choice.