Most Sbs have multiple sugar daddy anyway because one SD can’t fulfill everything. But I know that if the price is right and she like you, there’s a chance she will be monogamous to you. But for that to happen you gotta have a lot of money. Money = long term relationship.
If her motivation was money and you have a lot of money then she'll be all in with you already. The fact that you don't have that type of money, she is able to hustled other daddies on the side. These daddies have wives and kids and she knows it that they are not going to leave their wives and kids for her so then she falls back to you and the cycle continues itself.
You know in non suga relationship, you can still have an open relationship without putting anyone on payroll. It is open so it is easy come and easy go. With your case, if it goes sour, you can't get your money back.
So you see her 3x a week and she's allowed to see other daddies 4 other times a week. Sloppy seconds, nasty sex bra.
I don't know about you but in a non suga relationship, if my gf is out there fawking other people, that's just down right a nasty hoe. Don't come back to me and pretend to fawk me like everything is ok and normal. "Emotional DAmaged"